661060156002 has 16 divisors (see below), whose sum is σ = 1322296943520. Its totient is φ = 220323946752.

The previous prime is 661060155989. The next prime is 661060156021. The reversal of 661060156002 is 200651060166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7310968 + ... + 7400835.

It is an arithmetic number, because the mean of its divisors is an integer number (82643558970).

Almost surely, 2^661060156002 is an apocalyptic number.

661060156002 is an abundant number, since it is smaller than the sum of its proper divisors (661236787518).

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

661060156002 is a wasteful number, since it uses less digits than its factorization.

661060156002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14719297.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 661060156002 in words is "six hundred sixty-one billion, sixty million, one hundred fifty-six thousand, two".