21463662625042 has 64 divisors (see below), whose sum is σ = 36824477904000. Its totient is φ = 9295777036800.

The previous prime is 21463662625033. The next prime is 21463662625063. The reversal of 21463662625042 is 24052626636412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10319334 + ... + 12223582.

It is an arithmetic number, because the mean of its divisors is an integer number (575382467250).

Almost surely, 2^{21463662625042} is an apocalyptic number.

21463662625042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21463662625042 is a deficient number, since it is larger than the sum of its proper divisors (15360815278958).

21463662625042 is a wasteful number, since it uses less digits than its factorization.

21463662625042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904587.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 21463662625042 in words is "twenty-one trillion, four hundred sixty-three billion, six hundred sixty-two million, six hundred twenty-five thousand, forty-two".