78934011837 has 4 divisors (see below), whose sum is σ = 105245349120. Its totient is φ = 52622674556.

The previous prime is 78934011829. The next prime is 78934011847. The reversal of 78934011837 is 73811043987.

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.

It is a cyclic number.

It is not a de Polignac number, because 78934011837 - 2³ = 78934011829 is a prime.

It is a super-2 number, since 2×78934011837² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78934011837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78934011847) 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, 13155668637 + ... + 13155668642.

It is an arithmetic number, because the mean of its divisors is an integer number (26311337280).

Almost surely, 2^78934011837 is an apocalyptic number.

It is an amenable number.

78934011837 is a deficient number, since it is larger than the sum of its proper divisors (26311337283).

78934011837 is a wasteful number, since it uses less digits than its factorization.

78934011837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26311337282.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 78934011837 in words is "seventy-eight billion, nine hundred thirty-four million, eleven thousand, eight hundred thirty-seven".