37816811421 has 8 divisors (see below), whose sum is σ = 50438593920. Its totient is φ = 25203118272.

The previous prime is 37816811419. The next prime is 37816811429. The reversal of 37816811421 is 12411861873.

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

It is not a de Polignac number, because 37816811421 - 2¹ = 37816811419 is a prime.

It is a super-2 number, since 2×37816811421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37816811429) 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, 2011420 + ... + 2030133.

It is an arithmetic number, because the mean of its divisors is an integer number (6304824240).

Almost surely, 2^37816811421 is an apocalyptic number.

It is an amenable number.

37816811421 is a deficient number, since it is larger than the sum of its proper divisors (12621782499).

37816811421 is a wasteful number, since it uses less digits than its factorization.

37816811421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044675.

The product of its digits is 64512, while the sum is 42.

The spelling of 37816811421 in words is "thirty-seven billion, eight hundred sixteen million, eight hundred eleven thousand, four hundred twenty-one".