20543642631022 has 48 divisors (see below), whose sum is σ = 36681448866480. Its totient is φ = 8599371806592.

The previous prime is 20543642630999. The next prime is 20543642631067. The reversal of 20543642631022 is 22013624634502.

It is a super-2 number, since 2×20543642631022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160864618 + ... + 160992274.

It is an arithmetic number, because the mean of its divisors is an integer number (764196851385).

Almost surely, 2^{20543642631022} is an apocalyptic number.

20543642631022 is a deficient number, since it is larger than the sum of its proper divisors (16137806235458).

20543642631022 is a wasteful number, since it uses less digits than its factorization.

20543642631022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165905 (or 165898 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 20543642631022 in words is "twenty trillion, five hundred forty-three billion, six hundred forty-two million, six hundred thirty-one thousand, twenty-two".