20550405132 has 24 divisors (see below), whose sum is σ = 53278828400. Its totient is φ = 6850135008.

The previous prime is 20550405101. The next prime is 20550405133. The reversal of 20550405132 is 23150405502.

It is a happy number.

20550405132 is a `hidden beast` number, since 20 + 5 + 504 + 0 + 5 + 132 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20550405096 and 20550405105.

It is not an unprimeable number, because it can be changed into a prime (20550405133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95140657 + ... + 95140872.

Almost surely, 2^20550405132 is an apocalyptic number.

It is an amenable number.

20550405132 is an abundant number, since it is smaller than the sum of its proper divisors (32728423268).

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

20550405132 is a wasteful number, since it uses less digits than its factorization.

20550405132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190281542 (or 190281534 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 20550405132 in words is "twenty billion, five hundred fifty million, four hundred five thousand, one hundred thirty-two".