37132781481 has 20 divisors (see below), whose sum is σ = 55511919232. Its totient is φ = 24736461048.

The previous prime is 37132781459. The next prime is 37132781501. The reversal of 37132781481 is 18418723173.

37132781481 is a `hidden beast` number, since 3 + 71 + 3 + 27 + 81 + 481 = 666.

It is not a de Polignac number, because 37132781481 - 2¹³ = 37132773289 is a prime.

It is a super-2 number, since 2×37132781481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37132780481) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65245 + ... + 280218.

Almost surely, 2^37132781481 is an apocalyptic number.

It is an amenable number.

37132781481 is a deficient number, since it is larger than the sum of its proper divisors (18379137751).

37132781481 is a wasteful number, since it uses less digits than its factorization.

37132781481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346802 (or 346793 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 37132781481 in words is "thirty-seven billion, one hundred thirty-two million, seven hundred eighty-one thousand, four hundred eighty-one".