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51946616798725 = 52111483127374773
BaseRepresentation
bin10111100111110110000111…
…01001000011111000000101
320210221001022001002111211011
423303323003221003320011
523302043132400024400
6302251540223042221
713641006406252645
oct1363730351037005
9223831261074734
1051946616798725
1115608488a34710
1259ab728a40371
1322ca711323a8c
14cb83302d0525
156013b625c8ba
hex2f3ec3a43e05

51946616798725 has 24 divisors (see below), whose sum is σ = 70316989237152. Its totient is φ = 37753882420800.

The previous prime is 51946616798651. The next prime is 51946616798773. The reversal of 51946616798725 is 52789761664915.

It is not a de Polignac number, because 51946616798725 - 215 = 51946616765957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63279562 + ... + 64095211.

It is an arithmetic number, because the mean of its divisors is an integer number (2929874551548).

Almost surely, 251946616798725 is an apocalyptic number.

51946616798725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51946616798725 is a deficient number, since it is larger than the sum of its proper divisors (18370372438427).

51946616798725 is a wasteful number, since it uses less digits than its factorization.

51946616798725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127376277 (or 127376272 counting only the distinct ones).

The product of its digits is 1371686400, while the sum is 76.

The spelling of 51946616798725 in words is "fifty-one trillion, nine hundred forty-six billion, six hundred sixteen million, seven hundred ninety-eight thousand, seven hundred twenty-five".

Divisors: 1 5 11 25 55 275 1483 7415 16313 37075 81565 407825 127374773 636873865 1401122503 3184369325 7005612515 35028062575 188896788359 944483941795 2077864671949 4722419708975 10389323359745 51946616798725