42691626989664 has 96 divisors (see below), whose sum is σ = 112160685256704. Its totient is φ = 14218460551680.

The previous prime is 42691626989617. The next prime is 42691626989743. The reversal of 42691626989664 is 46698962619624.

42691626989664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 42691626989664.

It is a congruent number.

It is an unprimeable number.

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, 1568897019 + ... + 1568924229.

It is an arithmetic number, because the mean of its divisors is an integer number (1168340471424).

Almost surely, 2^{42691626989664} is an apocalyptic number.

It is an amenable number.

42691626989664 is an abundant number, since it is smaller than the sum of its proper divisors (69469058267040).

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

42691626989664 is a wasteful number, since it uses less digits than its factorization.

42691626989664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40500 (or 40492 counting only the distinct ones).

The product of its digits is 2902376448, while the sum is 78.

The spelling of 42691626989664 in words is "forty-two trillion, six hundred ninety-one billion, six hundred twenty-six million, nine hundred eighty-nine thousand, six hundred sixty-four".