131773732459 has 4 divisors (see below), whose sum is σ = 139525128504. Its totient is φ = 124022336416.

The previous prime is 131773732423. The next prime is 131773732463. The reversal of 131773732459 is 954237377131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131773732459 - 2¹⁷ = 131773601387 is a prime.

It is a super-2 number, since 2×131773732459² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131773732469) 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, 3875697997 + ... + 3875698030.

It is an arithmetic number, because the mean of its divisors is an integer number (34881282126).

Almost surely, 2^131773732459 is an apocalyptic number.

131773732459 is a deficient number, since it is larger than the sum of its proper divisors (7751396045).

131773732459 is an equidigital number, since it uses as much as digits as its factorization.

131773732459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751396044.

The product of its digits is 3333960, while the sum is 52.

The spelling of 131773732459 in words is "one hundred thirty-one billion, seven hundred seventy-three million, seven hundred thirty-two thousand, four hundred fifty-nine".