37818682561 has 8 divisors (see below), whose sum is σ = 41310126144. Its totient is φ = 34336135920.

The previous prime is 37818682553. The next prime is 37818682589. The reversal of 37818682561 is 16528681873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37818682561 - 2³ = 37818682553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37818682541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215341 + ... + 2232346.

It is an arithmetic number, because the mean of its divisors is an integer number (5163765768).

Almost surely, 2^37818682561 is an apocalyptic number.

It is an amenable number.

37818682561 is a deficient number, since it is larger than the sum of its proper divisors (3491443583).

37818682561 is a wasteful number, since it uses less digits than its factorization.

37818682561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448471.

The product of its digits is 3870720, while the sum is 55.

The spelling of 37818682561 in words is "thirty-seven billion, eight hundred eighteen million, six hundred eighty-two thousand, five hundred sixty-one".