61551006008 has 64 divisors (see below), whose sum is σ = 129156249600. Its totient is φ = 27361825920.

The previous prime is 61551005983. The next prime is 61551006037. The reversal of 61551006008 is 80060015516.

It is a happy number.

61551006008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 19193 + ... + 351383.

It is an arithmetic number, because the mean of its divisors is an integer number (2018066400).

Almost surely, 2^61551006008 is an apocalyptic number.

It is an amenable number.

61551006008 is an abundant number, since it is smaller than the sum of its proper divisors (67605243592).

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

61551006008 is a wasteful number, since it uses less digits than its factorization.

61551006008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332292 (or 332288 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 61551006008 in words is "sixty-one billion, five hundred fifty-one million, six thousand, eight".