51404561044238 has 16 divisors (see below), whose sum is σ = 77671434606480. Its totient is φ = 25514709124800.

The previous prime is 51404561044231. The next prime is 51404561044273. The reversal of 51404561044238 is 83244016540415.

It is a junction number, because it is equal to n+sod(n) for n = 51404561044192 and 51404561044201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404561044231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156406223 + ... + 156734538.

It is an arithmetic number, because the mean of its divisors is an integer number (4854464662905).

Almost surely, 2^{51404561044238} is an apocalyptic number.

51404561044238 is a deficient number, since it is larger than the sum of its proper divisors (26266873562242).

51404561044238 is a wasteful number, since it uses less digits than its factorization.

51404561044238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313141363.

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 51404561044238 in words is "fifty-one trillion, four hundred four billion, five hundred sixty-one million, forty-four thousand, two hundred thirty-eight".