20615096978 has 16 divisors (see below), whose sum is σ = 35367361344. Its totient is φ = 8828242800.

The previous prime is 20615096951. The next prime is 20615097001. The reversal of 20615096978 is 87969051602.

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, 547700 + ... + 584127.

It is an arithmetic number, because the mean of its divisors is an integer number (2210460084).

Almost surely, 2^20615096978 is an apocalyptic number.

20615096978 is a deficient number, since it is larger than the sum of its proper divisors (14752264366).

20615096978 is a wasteful number, since it uses less digits than its factorization.

20615096978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133137.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 20615096978 in words is "twenty billion, six hundred fifteen million, ninety-six thousand, nine hundred seventy-eight".