78835137264 has 120 divisors (see below), whose sum is σ = 245265052032. Its totient is φ = 23474465280.

The previous prime is 78835137263. The next prime is 78835137301. The reversal of 78835137264 is 46273153887.

It is a happy number.

It is a super-4 number, since 4×78835137264⁴ (a number of 45 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78835137264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78835137263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621207 + ... + 737270.

Almost surely, 2^78835137264 is an apocalyptic number.

It is an amenable number.

78835137264 is an abundant number, since it is smaller than the sum of its proper divisors (166429914768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78835137264 is a wasteful number, since it uses less digits than its factorization.

78835137264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358535 (or 1358526 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 78835137264 in words is "seventy-eight billion, eight hundred thirty-five million, one hundred thirty-seven thousand, two hundred sixty-four".