20615046406 has 16 divisors (see below), whose sum is σ = 31003534080. Its totient is φ = 10280571840.

The previous prime is 20615046383. The next prime is 20615046437. The reversal of 20615046406 is 60464051602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216411 + ... + 1233241.

It is an arithmetic number, because the mean of its divisors is an integer number (1937720880).

Almost surely, 2^20615046406 is an apocalyptic number.

20615046406 is a deficient number, since it is larger than the sum of its proper divisors (10388487674).

20615046406 is a wasteful number, since it uses less digits than its factorization.

20615046406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18399.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 20615046406 in words is "twenty billion, six hundred fifteen million, forty-six thousand, four hundred six".