537421631690 has 8 divisors (see below), whose sum is σ = 967358937060. Its totient is φ = 214968652672.

The previous prime is 537421631689. The next prime is 537421631693. The reversal of 537421631690 is 96136124735.

It can be written as a sum of positive squares in 2 ways, for example, as 446252056441 + 91169575249 = 668021^2 + 301943^2 .

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

It is a super-2 number, since 2×537421631690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (537421631693) 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, 26871081575 + ... + 26871081594.

Almost surely, 2^537421631690 is an apocalyptic number.

537421631690 is a deficient number, since it is larger than the sum of its proper divisors (429937305370).

537421631690 is a wasteful number, since it uses less digits than its factorization.

537421631690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53742163176.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 537421631690 in words is "five hundred thirty-seven billion, four hundred twenty-one million, six hundred thirty-one thousand, six hundred ninety".