20503078732 has 6 divisors (see below), whose sum is σ = 35880387788. Its totient is φ = 10251539364.

The previous prime is 20503078723. The next prime is 20503078741. The reversal of 20503078732 is 23787030502.

It is an interprime number because it is at equal distance from previous prime (20503078723) and next prime (20503078741).

It is a junction number, because it is equal to n+sod(n) for n = 20503078691 and 20503078700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2562884838 + ... + 2562884845.

Almost surely, 2^20503078732 is an apocalyptic number.

It is an amenable number.

20503078732 is a deficient number, since it is larger than the sum of its proper divisors (15377309056).

20503078732 is a wasteful number, since it uses less digits than its factorization.

20503078732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125769687 (or 5125769685 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 20503078732 in words is "twenty billion, five hundred three million, seventy-eight thousand, seven hundred thirty-two".