131554637503 has 2 divisors, whose sum is σ = 131554637504. Its totient is φ = 131554637502.

The previous prime is 131554637447. The next prime is 131554637509. The reversal of 131554637503 is 305736455131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131554637503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131554637503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131554637509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65777318751 + 65777318752.

It is an arithmetic number, because the mean of its divisors is an integer number (65777318752).

Almost surely, 2^131554637503 is an apocalyptic number.

131554637503 is a deficient number, since it is larger than the sum of its proper divisors (1).

131554637503 is an equidigital number, since it uses as much as digits as its factorization.

131554637503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 131554637503 in words is "one hundred thirty-one billion, five hundred fifty-four million, six hundred thirty-seven thousand, five hundred three".