21364162272642 has 16 divisors (see below), whose sum is σ = 48832370908992. Its totient is φ = 6104046363600.

The previous prime is 21364162272623. The next prime is 21364162272667. The reversal of 21364162272642 is 24627226146312.

It is a super-2 number, since 2×21364162272642² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21364162272591 and 21364162272600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254335265109 + ... + 254335265192.

It is an arithmetic number, because the mean of its divisors is an integer number (3052023181812).

Almost surely, 2^{21364162272642} is an apocalyptic number.

21364162272642 is an abundant number, since it is smaller than the sum of its proper divisors (27468208636350).

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

21364162272642 is a wasteful number, since it uses less digits than its factorization.

21364162272642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508670530313.

The product of its digits is 2322432, while the sum is 48.

The spelling of 21364162272642 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred sixty-two million, two hundred seventy-two thousand, six hundred forty-two".