51404643036 has 48 divisors (see below), whose sum is σ = 134958297600. Its totient is φ = 16917980976.

The previous prime is 51404643029. The next prime is 51404643041. The reversal of 51404643036 is 63034640415.

51404643036 is a `hidden beast` number, since 5 + 1 + 4 + 0 + 4 + 643 + 0 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003930 + ... + 3020993.

It is an arithmetic number, because the mean of its divisors is an integer number (2811631200).

Almost surely, 2^51404643036 is an apocalyptic number.

It is an amenable number.

51404643036 is an abundant number, since it is smaller than the sum of its proper divisors (83553654564).

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

51404643036 is a wasteful number, since it uses less digits than its factorization.

51404643036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025015 (or 6025007 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 51404643036 in words is "fifty-one billion, four hundred four million, six hundred forty-three thousand, thirty-six".