37979818561 has 8 divisors (see below), whose sum is σ = 40270574880. Its totient is φ = 35718244128.

The previous prime is 37979818559. The next prime is 37979818573. The reversal of 37979818561 is 16581897973.

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 37979818561 - 2¹ = 37979818559 is a prime.

It is a super-2 number, since 2×37979818561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37979818493 and 37979818502.

It is not an unprimeable number, because it can be changed into a prime (37979818531) 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, 7292791 + ... + 7297996.

It is an arithmetic number, because the mean of its divisors is an integer number (5033821860).

Almost surely, 2^37979818561 is an apocalyptic number.

It is an amenable number.

37979818561 is a deficient number, since it is larger than the sum of its proper divisors (2290756319).

37979818561 is a wasteful number, since it uses less digits than its factorization.

37979818561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14590943.

The product of its digits is 22861440, while the sum is 64.

The spelling of 37979818561 in words is "thirty-seven billion, nine hundred seventy-nine million, eight hundred eighteen thousand, five hundred sixty-one".