131551777663 has 16 divisors (see below), whose sum is σ = 136187606016. Its totient is φ = 126989372160.

The previous prime is 131551777639. The next prime is 131551777667. The reversal of 131551777663 is 366777155131.

It is not a de Polignac number, because 131551777663 - 2⁵ = 131551777631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131551777663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131551777667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1908345 + ... + 1976077.

It is an arithmetic number, because the mean of its divisors is an integer number (8511725376).

Almost surely, 2^131551777663 is an apocalyptic number.

131551777663 is a deficient number, since it is larger than the sum of its proper divisors (4635828353).

131551777663 is a wasteful number, since it uses less digits than its factorization.

131551777663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68274.

The product of its digits is 2778300, while the sum is 52.

The spelling of 131551777663 in words is "one hundred thirty-one billion, five hundred fifty-one million, seven hundred seventy-seven thousand, six hundred sixty-three".