131651531653551 has 24 divisors (see below), whose sum is σ = 217230591542400. Its totient is φ = 69442566145056.

The previous prime is 131651531653511. The next prime is 131651531653591. The reversal of 131651531653551 is 155356135156131.

It is an interprime number because it is at equal distance from previous prime (131651531653511) and next prime (131651531653591).

It is not a de Polignac number, because 131651531653551 - 2¹⁹ = 131651531129263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131651531653494 and 131651531653503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131651531653501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18547690401 + ... + 18547697498.

It is an arithmetic number, because the mean of its divisors is an integer number (9051274647600).

Almost surely, 2^{131651531653551} is an apocalyptic number.

131651531653551 is a deficient number, since it is larger than the sum of its proper divisors (85579059888849).

131651531653551 is a wasteful number, since it uses less digits than its factorization.

131651531653551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37095387935 (or 37095387922 counting only the distinct ones).

The product of its digits is 3037500, while the sum is 51.

The spelling of 131651531653551 in words is "one hundred thirty-one trillion, six hundred fifty-one billion, five hundred thirty-one million, six hundred fifty-three thousand, five hundred fifty-one".