19770977275 has 12 divisors (see below), whose sum is σ = 28018299472. Its totient is φ = 13557241440.

The previous prime is 19770977249. The next prime is 19770977279. The reversal of 19770977275 is 57277907791.

It is not a de Polignac number, because 19770977275 - 2⁵ = 19770977243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19770977279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56488332 + ... + 56488681.

Almost surely, 2^19770977275 is an apocalyptic number.

19770977275 is a deficient number, since it is larger than the sum of its proper divisors (8247322197).

19770977275 is a wasteful number, since it uses less digits than its factorization.

19770977275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112977030 (or 112977025 counting only the distinct ones).

The product of its (nonzero) digits is 13613670, while the sum is 61.

The spelling of 19770977275 in words is "nineteen billion, seven hundred seventy million, nine hundred seventy-seven thousand, two hundred seventy-five".