38405237677 has 4 divisors (see below), whose sum is σ = 38662991100. Its totient is φ = 38147484256.

The previous prime is 38405237641. The next prime is 38405237687. The reversal of 38405237677 is 77673250483.

It is a happy number.

38405237677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21558755241 + 16846482436 = 146829^2 + 129794^2 .

It is a cyclic number.

It is not a de Polignac number, because 38405237677 - 2²³ = 38396849069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38405237687) 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, 128876488 + ... + 128876785.

It is an arithmetic number, because the mean of its divisors is an integer number (9665747775).

Almost surely, 2^38405237677 is an apocalyptic number.

It is an amenable number.

38405237677 is a deficient number, since it is larger than the sum of its proper divisors (257753423).

38405237677 is a wasteful number, since it uses less digits than its factorization.

38405237677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257753422.

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 38405237677 in words is "thirty-eight billion, four hundred five million, two hundred thirty-seven thousand, six hundred seventy-seven".