51436801863602 has 16 divisors (see below), whose sum is σ = 78574848206400. Its totient is φ = 25246429462800.

The previous prime is 51436801863581. The next prime is 51436801863637. The reversal of 51436801863602 is 20636810863415.

It is a happy number.

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, 310833902 + ... + 310999337.

It is an arithmetic number, because the mean of its divisors is an integer number (4910928012900).

Almost surely, 2^{51436801863602} is an apocalyptic number.

51436801863602 is a deficient number, since it is larger than the sum of its proper divisors (27138046342798).

51436801863602 is a wasteful number, since it uses less digits than its factorization.

51436801863602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621834001.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 51436801863602 in words is "fifty-one trillion, four hundred thirty-six billion, eight hundred one million, eight hundred sixty-three thousand, six hundred two".