8072165477 has 8 divisors (see below), whose sum is σ = 8225804664. Its totient is φ = 7918575808.

The previous prime is 8072165459. The next prime is 8072165501. The reversal of 8072165477 is 7745612708.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1883039236 + 6189126241 = 43394^2 + 78671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8072165477 - 2⁸ = 8072165221 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 (8072165377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619643 + ... + 632535.

It is an arithmetic number, because the mean of its divisors is an integer number (1028225583).

Almost surely, 2^8072165477 is an apocalyptic number.

It is an amenable number.

8072165477 is a deficient number, since it is larger than the sum of its proper divisors (153639187).

8072165477 is a wasteful number, since it uses less digits than its factorization.

8072165477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24759.

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 8072165477 is about 89845.2306858856. The cubic root of 8072165477 is about 2005.9957969970.

The spelling of 8072165477 in words is "eight billion, seventy-two million, one hundred sixty-five thousand, four hundred seventy-seven".