51056551506 has 32 divisors (see below), whose sum is σ = 102501439488. Its totient is φ = 16954174080.

The previous prime is 51056551501. The next prime is 51056551573. The reversal of 51056551506 is 60515565015.

51056551506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51056551501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6970326 + ... + 6977646.

It is an arithmetic number, because the mean of its divisors is an integer number (3203169984).

Almost surely, 2^51056551506 is an apocalyptic number.

51056551506 is an abundant number, since it is smaller than the sum of its proper divisors (51444887982).

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

51056551506 is a wasteful number, since it uses less digits than its factorization.

51056551506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11586.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 51056551506 in words is "fifty-one billion, fifty-six million, five hundred fifty-one thousand, five hundred six".