19077396457 has 4 divisors (see below), whose sum is σ = 21802738816. Its totient is φ = 16352054100.

The previous prime is 19077396431. The next prime is 19077396517. The reversal of 19077396457 is 75469377091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19077396457 - 2¹⁹ = 19076872169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19077396407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362671169 + ... + 1362671182.

It is an arithmetic number, because the mean of its divisors is an integer number (5450684704).

Almost surely, 2^19077396457 is an apocalyptic number.

It is an amenable number.

19077396457 is a deficient number, since it is larger than the sum of its proper divisors (2725342359).

19077396457 is an equidigital number, since it uses as much as digits as its factorization.

19077396457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725342358.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 19077396457 in words is "nineteen billion, seventy-seven million, three hundred ninety-six thousand, four hundred fifty-seven".