20615096977 has 8 divisors (see below), whose sum is σ = 21328416000. Its totient is φ = 19901941584.

The previous prime is 20615096951. The next prime is 20615097001. The reversal of 20615096977 is 77969051602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20615096977 - 2¹⁹ = 20614572689 is a prime.

It is a super-2 number, since 2×20615096977² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20615096917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250774 + ... + 322672.

It is an arithmetic number, because the mean of its divisors is an integer number (2666052000).

Almost surely, 2^20615096977 is an apocalyptic number.

It is an amenable number.

20615096977 is a deficient number, since it is larger than the sum of its proper divisors (713319023).

20615096977 is an equidigital number, since it uses as much as digits as its factorization.

20615096977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81815.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 20615096977 in words is "twenty billion, six hundred fifteen million, ninety-six thousand, nine hundred seventy-seven".