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51142351015 = 5719411875751
BaseRepresentation
bin101111101000010100…
…100101100010100111
311220000012100121121201
4233220110211202213
51314214420213030
635254450023331
73460232545120
oct575024454247
9156005317551
1051142351015
111a7645842a8
129ab3577b47
134a9062b382
142692335047
1514e4ce42ca
hexbe85258a7

51142351015 has 32 divisors (see below), whose sum is σ = 75630320640. Its totient is φ = 32412960000.

The previous prime is 51142350983. The next prime is 51142351027. The reversal of 51142351015 is 51015324115.

51142351015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51142351015 - 25 = 51142350983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 910611 + ... + 965140.

It is an arithmetic number, because the mean of its divisors is an integer number (2363447520).

Almost surely, 251142351015 is an apocalyptic number.

51142351015 is a deficient number, since it is larger than the sum of its proper divisors (24487969625).

51142351015 is a wasteful number, since it uses less digits than its factorization.

51142351015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875823.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 51142351015 in words is "fifty-one billion, one hundred forty-two million, three hundred fifty-one thousand, fifteen".

Divisors: 1 5 7 19 35 41 95 133 205 287 665 779 1435 3895 5453 27265 1875751 9378755 13130257 35639269 65651285 76905791 178196345 249474883 384528955 538340537 1247374415 1461210029 2691702685 7306050145 10228470203 51142351015