20539590457000 has 32 divisors (see below), whose sum is σ = 48062641671720. Its totient is φ = 8215836182400.

The previous prime is 20539590456961. The next prime is 20539590457039. The reversal of 20539590457000 is 75409593502.

It is an interprime number because it is at equal distance from previous prime (20539590456961) and next prime (20539590457039).

It can be written as a sum of positive squares in 4 ways, for example, as 2184312555364 + 18355277901636 = 1477942^2 + 4284306^2 .

It is a super-2 number, since 2×20539590457000² (a number of 27 digits) contains 22 as substring.

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, 10269794229 + ... + 10269796228.

Almost surely, 2^{20539590457000} is an apocalyptic number.

20539590457000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20539590457000 is an abundant number, since it is smaller than the sum of its proper divisors (27523051214720).

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

20539590457000 is a wasteful number, since it uses less digits than its factorization.

20539590457000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20539590478 (or 20539590464 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 20539590457000 in words is "twenty trillion, five hundred thirty-nine billion, five hundred ninety million, four hundred fifty-seven thousand".