51450886654356 has 72 divisors (see below), whose sum is σ = 138427292471104. Its totient is φ = 14570162288640.

The previous prime is 51450886654337. The next prime is 51450886654369. The reversal of 51450886654356 is 65345668805415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22911685 + ... + 25056876.

Almost surely, 2^{51450886654356} is an apocalyptic number.

It is an amenable number.

51450886654356 is an abundant number, since it is smaller than the sum of its proper divisors (86976405816748).

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

51450886654356 is a wasteful number, since it uses less digits than its factorization.

51450886654356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47968801 (or 47968686 counting only the distinct ones).

The product of its (nonzero) digits is 414720000, while the sum is 66.

The spelling of 51450886654356 in words is "fifty-one trillion, four hundred fifty billion, eight hundred eighty-six million, six hundred fifty-four thousand, three hundred fifty-six".