20940127506 has 32 divisors (see below), whose sum is σ = 48982756800. Its totient is φ = 6612671520.

The previous prime is 20940127501. The next prime is 20940127513. The reversal of 20940127506 is 60572104902.

20940127506 is a `hidden beast` number, since 20 + 9 + 4 + 0 + 127 + 506 = 666.

It is not an unprimeable number, because it can be changed into a prime (20940127501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10203715 + ... + 10205766.

It is an arithmetic number, because the mean of its divisors is an integer number (1530711150).

Almost surely, 2^20940127506 is an apocalyptic number.

20940127506 is an abundant number, since it is smaller than the sum of its proper divisors (28042629294).

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

20940127506 is a wasteful number, since it uses less digits than its factorization.

20940127506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20409511 (or 20409505 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 20940127506 in words is "twenty billion, nine hundred forty million, one hundred twenty-seven thousand, five hundred six".