20373139746 has 24 divisors (see below), whose sum is σ = 44147598300. Its totient is φ = 6790154976.

The previous prime is 20373139691. The next prime is 20373139777. The reversal of 20373139746 is 64793137302.

It is a happy number.

20373139746 is a `hidden beast` number, since 203 + 7 + 313 + 97 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20233640025 + 139499721 = 142245^2 + 11811^2 .

It is a super-2 number, since 2×20373139746² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74680 + ... + 215228.

Almost surely, 2^20373139746 is an apocalyptic number.

20373139746 is an abundant number, since it is smaller than the sum of its proper divisors (23774458554).

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

20373139746 is a wasteful number, since it uses less digits than its factorization.

20373139746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148610 (or 148607 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 20373139746 in words is "twenty billion, three hundred seventy-three million, one hundred thirty-nine thousand, seven hundred forty-six".