77993206037 has 4 divisors (see below), whose sum is σ = 78003052896. Its totient is φ = 77983359180.

The previous prime is 77993206021. The next prime is 77993206097. The reversal of 77993206037 is 73060239977.

It is a happy number.

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 77993206037 - 2⁴ = 77993206021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77993206037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77993206097) 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, 4911539 + ... + 4927392.

It is an arithmetic number, because the mean of its divisors is an integer number (19500763224).

Almost surely, 2^77993206037 is an apocalyptic number.

It is an amenable number.

77993206037 is a deficient number, since it is larger than the sum of its proper divisors (9846859).

77993206037 is an equidigital number, since it uses as much as digits as its factorization.

77993206037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846858.

The product of its (nonzero) digits is 3000564, while the sum is 53.

The spelling of 77993206037 in words is "seventy-seven billion, nine hundred ninety-three million, two hundred six thousand, thirty-seven".