131778345780807 has 32 divisors (see below), whose sum is σ = 207270890025984. Its totient is φ = 73568371430400.

The previous prime is 131778345780787. The next prime is 131778345780833. The reversal of 131778345780807 is 708087543877131.

It is not a de Polignac number, because 131778345780807 - 2¹² = 131778345776711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131778345780847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2498899294 + ... + 2498952027.

It is an arithmetic number, because the mean of its divisors is an integer number (6477215313312).

Almost surely, 2^{131778345780807} is an apocalyptic number.

131778345780807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131778345780807 is a deficient number, since it is larger than the sum of its proper divisors (75492544245177).

131778345780807 is a wasteful number, since it uses less digits than its factorization.

131778345780807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997851399.

The product of its (nonzero) digits is 221276160, while the sum is 69.

The spelling of 131778345780807 in words is "one hundred thirty-one trillion, seven hundred seventy-eight billion, three hundred forty-five million, seven hundred eighty thousand, eight hundred seven".