19077129487 has 6 divisors (see below), whose sum is σ = 20657483592. Its totient is φ = 17609657832.

The previous prime is 19077129457. The next prime is 19077129521. The reversal of 19077129487 is 78492177091.

It is not a de Polignac number, because 19077129487 - 2¹⁵ = 19077096719 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 (19077129457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56441043 + ... + 56441380.

It is an arithmetic number, because the mean of its divisors is an integer number (3442913932).

Almost surely, 2^19077129487 is an apocalyptic number.

19077129487 is a deficient number, since it is larger than the sum of its proper divisors (1580354105).

19077129487 is a wasteful number, since it uses less digits than its factorization.

19077129487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112882449 (or 112882436 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 19077129487 in words is "nineteen billion, seventy-seven million, one hundred twenty-nine thousand, four hundred eighty-seven".