20655050605400 has 48 divisors (see below), whose sum is σ = 50550518596200. Its totient is φ = 7827177070080.

The previous prime is 20655050605373. The next prime is 20655050605411. The reversal of 20655050605400 is 450605055602.

It is a happy number.

It is a super-2 number, since 2×20655050605400² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2717766017 + ... + 2717773616.

Almost surely, 2^{20655050605400} is an apocalyptic number.

20655050605400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20655050605400 is an abundant number, since it is smaller than the sum of its proper divisors (29895467990800).

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

20655050605400 is a wasteful number, since it uses less digits than its factorization.

20655050605400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435539668 (or 5435539659 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 20655050605400 in words is "twenty trillion, six hundred fifty-five billion, fifty million, six hundred five thousand, four hundred".