20409624132 has 24 divisors (see below), whose sum is σ = 49158665472. Its totient is φ = 6583749600.

The previous prime is 20409624127. The next prime is 20409624203. The reversal of 20409624132 is 23142690402.

It is a junction number, because it is equal to n+sod(n) for n = 20409624093 and 20409624102.

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, 27431919 + ... + 27432662.

It is an arithmetic number, because the mean of its divisors is an integer number (2048277728).

Almost surely, 2^20409624132 is an apocalyptic number.

It is an amenable number.

20409624132 is an abundant number, since it is smaller than the sum of its proper divisors (28749041340).

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

20409624132 is a wasteful number, since it uses less digits than its factorization.

20409624132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54864619 (or 54864617 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 20409624132 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred thirty-two".