51005611002 has 16 divisors (see below), whose sum is σ = 104181674112. Its totient is φ = 16640128320.

The previous prime is 51005611001. The next prime is 51005611031. The reversal of 51005611002 is 20011650015.

It is a self number, because there is not a number n which added to its sum of digits gives 51005611002.

It is not an unprimeable number, because it can be changed into a prime (51005611001) 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, 90435199 + ... + 90435762.

It is an arithmetic number, because the mean of its divisors is an integer number (6511354632).

Almost surely, 2^51005611002 is an apocalyptic number.

51005611002 is an abundant number, since it is smaller than the sum of its proper divisors (53176063110).

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

51005611002 is a wasteful number, since it uses less digits than its factorization.

51005611002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180871013.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 51005611002 in words is "fifty-one billion, five million, six hundred eleven thousand, two".