19472643315 has 24 divisors (see below), whose sum is σ = 33817406688. Its totient is φ = 10365463680.

The previous prime is 19472643313. The next prime is 19472643329. The reversal of 19472643315 is 51334627491.

19472643315 is a `hidden beast` number, since 19 + 47 + 264 + 331 + 5 = 666.

It is not a de Polignac number, because 19472643315 - 2¹ = 19472643313 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19472643313) 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 23 ways as a sum of consecutive naturals, for example, 391839 + ... + 438728.

It is an arithmetic number, because the mean of its divisors is an integer number (1409058612).

Almost surely, 2^19472643315 is an apocalyptic number.

19472643315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19472643315 is a deficient number, since it is larger than the sum of its proper divisors (14344763373).

19472643315 is a wasteful number, since it uses less digits than its factorization.

19472643315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831099 (or 831096 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 19472643315 in words is "nineteen billion, four hundred seventy-two million, six hundred forty-three thousand, three hundred fifteen".