77344055738637 has 4 divisors (see below), whose sum is σ = 103125407651520. Its totient is φ = 51562703825756.

The previous prime is 77344055738627. The next prime is 77344055738647. The reversal of 77344055738637 is 73683755044377.

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 an interprime number because it is at equal distance from previous prime (77344055738627) and next prime (77344055738647).

It is a cyclic number.

It is not a de Polignac number, because 77344055738637 - 2¹² = 77344055734541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77344055738627) 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, 12890675956437 + ... + 12890675956442.

It is an arithmetic number, because the mean of its divisors is an integer number (25781351912880).

Almost surely, 2^{77344055738637} is an apocalyptic number.

It is an amenable number.

77344055738637 is a deficient number, since it is larger than the sum of its proper divisors (25781351912883).

77344055738637 is a wasteful number, since it uses less digits than its factorization.

77344055738637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25781351912882.

The product of its (nonzero) digits is 1244678400, while the sum is 69.

The spelling of 77344055738637 in words is "seventy-seven trillion, three hundred forty-four billion, fifty-five million, seven hundred thirty-eight thousand, six hundred thirty-seven".