51106555488 has 48 divisors (see below), whose sum is σ = 134249342976. Its totient is φ = 17023501440.

The previous prime is 51106555483. The next prime is 51106555501. The reversal of 51106555488 is 88455560115.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51106555488² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51106555483) 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, 50448 + ... + 323663.

It is an arithmetic number, because the mean of its divisors is an integer number (2796861312).

Almost surely, 2^51106555488 is an apocalyptic number.

It is an amenable number.

51106555488 is an abundant number, since it is smaller than the sum of its proper divisors (83142787488).

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

51106555488 is a wasteful number, since it uses less digits than its factorization.

51106555488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375547 (or 375539 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 48.

The spelling of 51106555488 in words is "fifty-one billion, one hundred six million, five hundred fifty-five thousand, four hundred eighty-eight".