78964357933 has 4 divisors (see below), whose sum is σ = 78965629920. Its totient is φ = 78963085948.

The previous prime is 78964357861. The next prime is 78964357939. The reversal of 78964357933 is 33975346987.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33975346987 = 149 ⋅228022463.

It is a cyclic number.

It is not a de Polignac number, because 78964357933 - 2¹³ = 78964349741 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 (78964357939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537823 + ... + 668716.

It is an arithmetic number, because the mean of its divisors is an integer number (19741407480).

Almost surely, 2^78964357933 is an apocalyptic number.

It is an amenable number.

78964357933 is a deficient number, since it is larger than the sum of its proper divisors (1271987).

78964357933 is a wasteful number, since it uses less digits than its factorization.

78964357933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271986.

The product of its digits is 102876480, while the sum is 64.

The spelling of 78964357933 in words is "seventy-eight billion, nine hundred sixty-four million, three hundred fifty-seven thousand, nine hundred thirty-three".