37677481997 has 4 divisors (see below), whose sum is σ = 37692757056. Its totient is φ = 37662206940.

The previous prime is 37677481967. The next prime is 37677482027. The reversal of 37677481997 is 79918477673.

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 (37677481967) and next prime (37677482027).

It is a cyclic number.

It is not a de Polignac number, because 37677481997 - 2²⁸ = 37409046541 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 (37677481967) 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, 7633829 + ... + 7638762.

It is an arithmetic number, because the mean of its divisors is an integer number (9423189264).

Almost surely, 2^37677481997 is an apocalyptic number.

It is an amenable number.

37677481997 is a deficient number, since it is larger than the sum of its proper divisors (15275059).

37677481997 is a wasteful number, since it uses less digits than its factorization.

37677481997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15275058.

The product of its digits is 112021056, while the sum is 68.

The spelling of 37677481997 in words is "thirty-seven billion, six hundred seventy-seven million, four hundred eighty-one thousand, nine hundred ninety-seven".