51612747402 has 16 divisors (see below), whose sum is σ = 103657403520. Its totient is φ = 17132264352.

The previous prime is 51612747383. The next prime is 51612747413. The reversal of 51612747402 is 20474721615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17994643 + ... + 17997510.

It is an arithmetic number, because the mean of its divisors is an integer number (6478587720).

Almost surely, 2^51612747402 is an apocalyptic number.

51612747402 is an abundant number, since it is smaller than the sum of its proper divisors (52044656118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51612747402 is a wasteful number, since it uses less digits than its factorization.

51612747402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35992397.

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 51612747402 in words is "fifty-one billion, six hundred twelve million, seven hundred forty-seven thousand, four hundred two".