131778265037555 has 32 divisors (see below), whose sum is σ = 163412895744000. Its totient is φ = 101910720637440.

The previous prime is 131778265037479. The next prime is 131778265037563. The reversal of 131778265037555 is 555730562877131.

It is not a de Polignac number, because 131778265037555 - 2¹⁸ = 131778264775411 is a prime.

It is a super-2 number, since 2×131778265037555² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131778265037491 and 131778265037500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3137631446 + ... + 3137673444.

It is an arithmetic number, because the mean of its divisors is an integer number (5106652992000).

Almost surely, 2^{131778265037555} is an apocalyptic number.

131778265037555 is a deficient number, since it is larger than the sum of its proper divisors (31634630706445).

131778265037555 is a wasteful number, since it uses less digits than its factorization.

131778265037555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63611.

The product of its (nonzero) digits is 185220000, while the sum is 65.

The spelling of 131778265037555 in words is "one hundred thirty-one trillion, seven hundred seventy-eight billion, two hundred sixty-five million, thirty-seven thousand, five hundred fifty-five".