131464867877 has 4 divisors (see below), whose sum is σ = 150245563296. Its totient is φ = 112684172460.

The previous prime is 131464867867. The next prime is 131464867879. The reversal of 131464867877 is 778768464131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 778768464131 = 7 ⋅111252637733.

It is a cyclic number.

It is not a de Polignac number, because 131464867877 - 2¹⁸ = 131464605733 is a prime.

It is a super-2 number, since 2×131464867877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131464867879) 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, 9390347699 + ... + 9390347712.

It is an arithmetic number, because the mean of its divisors is an integer number (37561390824).

Almost surely, 2^131464867877 is an apocalyptic number.

It is an amenable number.

131464867877 is a deficient number, since it is larger than the sum of its proper divisors (18780695419).

131464867877 is an equidigital number, since it uses as much as digits as its factorization.

131464867877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18780695418.

The product of its digits is 37933056, while the sum is 62.

The spelling of 131464867877 in words is "one hundred thirty-one billion, four hundred sixty-four million, eight hundred sixty-seven thousand, eight hundred seventy-seven".