20477621332 has 12 divisors (see below), whose sum is σ = 40955242720. Its totient is φ = 8776123416.

The previous prime is 20477621323. The next prime is 20477621341. The reversal of 20477621332 is 23312677402.

It is an interprime number because it is at equal distance from previous prime (20477621323) and next prime (20477621341).

20477621332 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20477621291 and 20477621300.

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, 365671782 + ... + 365671837.

Almost surely, 2^20477621332 is an apocalyptic number.

It is an amenable number.

20477621332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20477621332 is a wasteful number, since it uses less digits than its factorization.

20477621332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731343630 (or 731343628 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 20477621332 in words is "twenty billion, four hundred seventy-seven million, six hundred twenty-one thousand, three hundred thirty-two".