78333752885 has 8 divisors (see below), whose sum is σ = 94003289016. Its totient is φ = 62665145280.

The previous prime is 78333752837. The next prime is 78333752921. The reversal of 78333752885 is 58825733387.

It can be written as a sum of positive squares in 4 ways, for example, as 6401440081 + 71932312804 = 80009^2 + 268202^2 .

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

It is not a de Polignac number, because 78333752885 - 2³⁴ = 61153883701 is a prime.

It is a super-2 number, since 2×78333752885² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 30626 + ... + 396995.

It is an arithmetic number, because the mean of its divisors is an integer number (11750411127).

Almost surely, 2^78333752885 is an apocalyptic number.

It is an amenable number.

78333752885 is a deficient number, since it is larger than the sum of its proper divisors (15669536131).

78333752885 is a wasteful number, since it uses less digits than its factorization.

78333752885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464263.

The product of its digits is 33868800, while the sum is 59.

The spelling of 78333752885 in words is "seventy-eight billion, three hundred thirty-three million, seven hundred fifty-two thousand, eight hundred eighty-five".