20660425415 has 24 divisors (see below), whose sum is σ = 29543702832. Its totient is φ = 13821601920.

The previous prime is 20660425403. The next prime is 20660425451. The reversal of 20660425415 is 51452406602.

It is not a de Polignac number, because 20660425415 - 2⁶ = 20660425351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1018349 + ... + 1038438.

It is an arithmetic number, because the mean of its divisors is an integer number (1230987618).

Almost surely, 2^20660425415 is an apocalyptic number.

20660425415 is a deficient number, since it is larger than the sum of its proper divisors (8883277417).

20660425415 is a wasteful number, since it uses less digits than its factorization.

20660425415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056847 (or 2056840 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 20660425415 in words is "twenty billion, six hundred sixty million, four hundred twenty-five thousand, four hundred fifteen".