21696963042 has 16 divisors (see below), whose sum is σ = 43397489952. Its totient is φ = 7231727040.

The previous prime is 21696962953. The next prime is 21696963053. The reversal of 21696963042 is 24036969612.

It is a junction number, because it is equal to n+sod(n) for n = 21696962982 and 21696963000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65808 + ... + 218459.

It is an arithmetic number, because the mean of its divisors is an integer number (2712343122).

Almost surely, 2^21696963042 is an apocalyptic number.

21696963042 is an abundant number, since it is smaller than the sum of its proper divisors (21700526910).

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

21696963042 is a wasteful number, since it uses less digits than its factorization.

21696963042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296993.

The product of its (nonzero) digits is 839808, while the sum is 48.

The spelling of 21696963042 in words is "twenty-one billion, six hundred ninety-six million, nine hundred sixty-three thousand, forty-two".