19475121315 has 128 divisors (see below), whose sum is σ = 37013760000. Its totient is φ = 8651833344.

The previous prime is 19475121221. The next prime is 19475121329. The reversal of 19475121315 is 51312157491.

Together with 17538638684 it forms a betrothed pair.

It is not a de Polignac number, because 19475121315 - 2¹⁸ = 19474859171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38261281 + ... + 38261789.

It is an arithmetic number, because the mean of its divisors is an integer number (289170000).

Almost surely, 2^19475121315 is an apocalyptic number.

19475121315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19475121315 is a deficient number, since it is larger than the sum of its proper divisors (17538638685).

19475121315 is a wasteful number, since it uses less digits than its factorization.

19475121315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its digits is 37800, while the sum is 39.

The spelling of 19475121315 in words is "nineteen billion, four hundred seventy-five million, one hundred twenty-one thousand, three hundred fifteen".