20492555529464 has 16 divisors (see below), whose sum is σ = 38423589981000. Its totient is φ = 10246264867872.

The previous prime is 20492555529443. The next prime is 20492555529559. The reversal of 20492555529464 is 46492555529402.

It is a super-2 number, since 2×20492555529464² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20492555529397 and 20492555529406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10448687 + ... + 12253985.

Almost surely, 2^{20492555529464} is an apocalyptic number.

It is an amenable number.

20492555529464 is a deficient number, since it is larger than the sum of its proper divisors (17931034451536).

20492555529464 is a wasteful number, since it uses less digits than its factorization.

20492555529464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224222 (or 3224218 counting only the distinct ones).

The product of its (nonzero) digits is 155520000, while the sum is 62.

Subtracting from 20492555529464 its sum of digits (62), we obtain a palindrome (20492555529402).

The spelling of 20492555529464 in words is "twenty trillion, four hundred ninety-two billion, five hundred fifty-five million, five hundred twenty-nine thousand, four hundred sixty-four".