8161473772015 has 16 divisors (see below), whose sum is σ = 9848942210016. Its totient is φ = 6492404361600.

The previous prime is 8161473772009. The next prime is 8161473772031. The reversal of 8161473772015 is 5102773741618.

It is not a de Polignac number, because 8161473772015 - 2⁷ = 8161473771887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7970884 + ... + 8936326.

It is an arithmetic number, because the mean of its divisors is an integer number (615558888126).

Almost surely, 2^{8161473772015} is an apocalyptic number.

8161473772015 is a deficient number, since it is larger than the sum of its proper divisors (1687468438001).

8161473772015 is a wasteful number, since it uses less digits than its factorization.

8161473772015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974970.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 8161473772015 in words is "eight trillion, one hundred sixty-one billion, four hundred seventy-three million, seven hundred seventy-two thousand, fifteen".