20462404664040 has 64 divisors (see below), whose sum is σ = 61387719220800. Its totient is φ = 5456596334592.

The previous prime is 20462404664029. The next prime is 20462404664101. The reversal of 20462404664040 is 4046640426402.

It is a junction number, because it is equal to n+sod(n) for n = 20462404663983 and 20462404664001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15489759 + ... + 16758801.

It is an arithmetic number, because the mean of its divisors is an integer number (959183112825).

Almost surely, 2^{20462404664040} is an apocalyptic number.

20462404664040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20462404664040 is an abundant number, since it is smaller than the sum of its proper divisors (40925314556760).

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

20462404664040 is a wasteful number, since it uses less digits than its factorization.

20462404664040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403426 (or 1403422 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 20462404664040 in words is "twenty trillion, four hundred sixty-two billion, four hundred four million, six hundred sixty-four thousand, forty".