78754933971 has 48 divisors (see below), whose sum is σ = 137057476608. Its totient is φ = 42624446400.

The previous prime is 78754933883. The next prime is 78754934039. The reversal of 78754933971 is 17933945787.

78754933971 is a `hidden beast` number, since 7 + 8 + 75 + 493 + 3 + 9 + 71 = 666.

It is not a de Polignac number, because 78754933971 - 2¹³ = 78754925779 is a prime.

It is a hoax number, since the sum of its digits (63) 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 (63).

It is a junction number, because it is equal to n+sod(n) for n = 78754933899 and 78754933908.

It is not an unprimeable number, because it can be changed into a prime (78754933471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337200 + ... + 520781.

It is an arithmetic number, because the mean of its divisors is an integer number (2855364096).

Almost surely, 2^78754933971 is an apocalyptic number.

78754933971 is a deficient number, since it is larger than the sum of its proper divisors (58302542637).

78754933971 is a wasteful number, since it uses less digits than its factorization.

78754933971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858072 (or 858069 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 78754933971 in words is "seventy-eight billion, seven hundred fifty-four million, nine hundred thirty-three thousand, nine hundred seventy-one".