642651111014 has 32 divisors (see below), whose sum is σ = 1060661104416. Its totient is φ = 289605733120.

The previous prime is 642651111013. The next prime is 642651111041. The reversal of 642651111014 is 410111156246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642651111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2191904 + ... + 2467740.

It is an arithmetic number, because the mean of its divisors is an integer number (33145659513).

Almost surely, 2^642651111014 is an apocalyptic number.

642651111014 is a deficient number, since it is larger than the sum of its proper divisors (418009993402).

642651111014 is a wasteful number, since it uses less digits than its factorization.

642651111014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276760.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 642651111014 in words is "six hundred forty-two billion, six hundred fifty-one million, one hundred eleven thousand, fourteen".