131778752418557 has 8 divisors (see below), whose sum is σ = 139086364913760. Its totient is φ = 124508328791760.

The previous prime is 131778752418499. The next prime is 131778752418613. The reversal of 131778752418557 is 755814257877131.

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

It is a cyclic number.

It is not a de Polignac number, because 131778752418557 - 2¹² = 131778752414461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131778752414557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9297209819 + ... + 9297223992.

It is an arithmetic number, because the mean of its divisors is an integer number (17385795614220).

Almost surely, 2^{131778752418557} is an apocalyptic number.

It is an amenable number.

131778752418557 is a deficient number, since it is larger than the sum of its proper divisors (7307612495203).

131778752418557 is a wasteful number, since it uses less digits than its factorization.

131778752418557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18594434203.

The product of its digits is 460992000, while the sum is 71.

The spelling of 131778752418557 in words is "one hundred thirty-one trillion, seven hundred seventy-eight billion, seven hundred fifty-two million, four hundred eighteen thousand, five hundred fifty-seven".