131878874690 has 8 divisors (see below), whose sum is σ = 237381974460. Its totient is φ = 52751549872.

The previous prime is 131878874653. The next prime is 131878874711. The reversal of 131878874690 is 96478878131.

It can be written as a sum of positive squares in 2 ways, for example, as 122745823201 + 9133051489 = 350351^2 + 95567^2 .

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

It is a super-2 number, since 2×131878874690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6593943725 + ... + 6593943744.

Almost surely, 2^131878874690 is an apocalyptic number.

131878874690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131878874690 is a deficient number, since it is larger than the sum of its proper divisors (105503099770).

131878874690 is a wasteful number, since it uses less digits than its factorization.

131878874690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13187887476.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 131878874690 in words is "one hundred thirty-one billion, eight hundred seventy-eight million, eight hundred seventy-four thousand, six hundred ninety".