51534702351 has 18 divisors (see below), whose sum is σ = 81821397840. Its totient is φ = 31233152280.

The previous prime is 51534702347. The next prime is 51534702391. The reversal of 51534702351 is 15320743515.

51534702351 is a `hidden beast` number, since 5 + 1 + 534 + 70 + 2 + 3 + 51 = 666.

It is not a de Polignac number, because 51534702351 - 2² = 51534702347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51534702391) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23660391 + ... + 23662568.

Almost surely, 2^51534702351 is an apocalyptic number.

51534702351 is a deficient number, since it is larger than the sum of its proper divisors (30286695489).

51534702351 is a wasteful number, since it uses less digits than its factorization.

51534702351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47322987 (or 47322973 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 51534702351 in words is "fifty-one billion, five hundred thirty-four million, seven hundred two thousand, three hundred fifty-one".