20006762540 has 24 divisors (see below), whose sum is σ = 42016868880. Its totient is φ = 8002196928.

The previous prime is 20006762537. The next prime is 20006762563. The reversal of 20006762540 is 4526760002.

It is a junction number, because it is equal to n+sod(n) for n = 20006762497 and 20006762506.

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, 560879 + ... + 595481.

It is an arithmetic number, because the mean of its divisors is an integer number (1750702870).

Almost surely, 2^20006762540 is an apocalyptic number.

20006762540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20006762540 is an abundant number, since it is smaller than the sum of its proper divisors (22010106340).

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

20006762540 is a wasteful number, since it uses less digits than its factorization.

20006762540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63521 (or 63519 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20006762540 in words is "twenty billion, six million, seven hundred sixty-two thousand, five hundred forty".