83878728167475 has 36 divisors (see below), whose sum is σ = 154296557751856. Its totient is φ = 43526258936640.

The previous prime is 83878728167447. The next prime is 83878728167497. The reversal of 83878728167475 is 57476182787838.

83878728167475 is a `hidden beast` number, since 8 + 3 + 8 + 7 + 8 + 7 + 2 + 81 + 67 + 475 = 666.

It is not a de Polignac number, because 83878728167475 - 2⁶ = 83878728167411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83878728167394 and 83878728167403.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5037753127 + ... + 5037769776.

Almost surely, 2^{83878728167475} is an apocalyptic number.

83878728167475 is a deficient number, since it is larger than the sum of its proper divisors (70417829584381).

83878728167475 is a wasteful number, since it uses less digits than its factorization.

83878728167475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075522956 (or 10075522948 counting only the distinct ones).

The product of its digits is 7080837120, while the sum is 81.

The spelling of 83878728167475 in words is "eighty-three trillion, eight hundred seventy-eight billion, seven hundred twenty-eight million, one hundred sixty-seven thousand, four hundred seventy-five".