38405237678 has 16 divisors (see below), whose sum is σ = 59275950336. Its totient is φ = 18653762400.

The previous prime is 38405237641. The next prime is 38405237687. The reversal of 38405237678 is 87673250483.

38405237678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38405237678² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782926 + ... + 1804337.

It is an arithmetic number, because the mean of its divisors is an integer number (3704746896).

Almost surely, 2^38405237678 is an apocalyptic number.

38405237678 is a deficient number, since it is larger than the sum of its proper divisors (20870712658).

38405237678 is a wasteful number, since it uses less digits than its factorization.

38405237678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587419.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 38405237678 in words is "thirty-eight billion, four hundred five million, two hundred thirty-seven thousand, six hundred seventy-eight".