51355555573044 has 48 divisors (see below), whose sum is σ = 120158406144000. Its totient is φ = 17071552218336.

The previous prime is 51355555573031. The next prime is 51355555573117. The reversal of 51355555573044 is 44037555555315.

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, 393647977 + ... + 393778415.

It is an arithmetic number, because the mean of its divisors is an integer number (2503300128000).

Almost surely, 2^{51355555573044} is an apocalyptic number.

It is an amenable number.

51355555573044 is an abundant number, since it is smaller than the sum of its proper divisors (68802850570956).

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

51355555573044 is a wasteful number, since it uses less digits than its factorization.

51355555573044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220212 (or 220210 counting only the distinct ones).

The product of its (nonzero) digits is 78750000, while the sum is 57.

The spelling of 51355555573044 in words is "fifty-one trillion, three hundred fifty-five billion, five hundred fifty-five million, five hundred seventy-three thousand, forty-four".