15871340454 has 64 divisors (see below), whose sum is σ = 33815418624. Its totient is φ = 4948909056.

The previous prime is 15871340447. The next prime is 15871340491. The reversal of 15871340454 is 45404317851.

15871340454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15871340454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17973897 + ... + 17974779.

It is an arithmetic number, because the mean of its divisors is an integer number (528365916).

Almost surely, 2^15871340454 is an apocalyptic number.

15871340454 is an abundant number, since it is smaller than the sum of its proper divisors (17944078170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15871340454 is a wasteful number, since it uses less digits than its factorization.

15871340454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 15871340454 in words is "fifteen billion, eight hundred seventy-one million, three hundred forty thousand, four hundred fifty-four".