19926311877 has 8 divisors (see below), whose sum is σ = 29520462080. Its totient is φ = 13284207900.

The previous prime is 19926311869. The next prime is 19926311879. The reversal of 19926311877 is 77811362991.

It is a happy number.

It is not a de Polignac number, because 19926311877 - 2³ = 19926311869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926311879) 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, 369005749 + ... + 369005802.

It is an arithmetic number, because the mean of its divisors is an integer number (3690057760).

Almost surely, 2^19926311877 is an apocalyptic number.

It is an amenable number.

19926311877 is a deficient number, since it is larger than the sum of its proper divisors (9594150203).

19926311877 is an equidigital number, since it uses as much as digits as its factorization.

19926311877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738011560 (or 738011554 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The spelling of 19926311877 in words is "nineteen billion, nine hundred twenty-six million, three hundred eleven thousand, eight hundred seventy-seven".