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13900012765 = 52995862157
BaseRepresentation
bin11001111001000000…
…10101110011011101
31022212201022210212121
430330200111303131
5211431400402030
610215141302541
71001312105362
oct147440256335
938781283777
1013900012765
115993216361
12283b104a51
1314069a1132
1495c0ca469
1556548247a
hex33c815cdd

13900012765 has 8 divisors (see below), whose sum is σ = 17255188440. Its totient is φ = 10736561472.

The previous prime is 13900012751. The next prime is 13900012769. The reversal of 13900012765 is 56721000931.

It can be written as a sum of positive squares in 4 ways, for example, as 5862352356 + 8037660409 = 76566^2 + 89653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13900012765 - 25 = 13900012733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13900012765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13900012769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47930934 + ... + 47931223.

It is an arithmetic number, because the mean of its divisors is an integer number (2156898555).

Almost surely, 213900012765 is an apocalyptic number.

It is an amenable number.

13900012765 is a deficient number, since it is larger than the sum of its proper divisors (3355175675).

13900012765 is an equidigital number, since it uses as much as digits as its factorization.

13900012765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95862191.

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 13900012765 in words is "thirteen billion, nine hundred million, twelve thousand, seven hundred sixty-five".

Divisors: 1 5 29 145 95862157 479310785 2780002553 13900012765