145131635497 has 2 divisors, whose sum is σ = 145131635498. Its totient is φ = 145131635496.

The previous prime is 145131635449. The next prime is 145131635503. The reversal of 145131635497 is 794536131541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142760042896 + 2371592601 = 377836^2 + 48699^2 .

It is a cyclic number.

It is not a de Polignac number, because 145131635497 - 2¹⁵ = 145131602729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145131635497.

It is not a weakly prime, because it can be changed into another prime (145131635417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72565817748 + 72565817749.

It is an arithmetic number, because the mean of its divisors is an integer number (72565817749).

Almost surely, 2^145131635497 is an apocalyptic number.

It is an amenable number.

145131635497 is a deficient number, since it is larger than the sum of its proper divisors (1).

145131635497 is an equidigital number, since it uses as much as digits as its factorization.

145131635497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The spelling of 145131635497 in words is "one hundred forty-five billion, one hundred thirty-one million, six hundred thirty-five thousand, four hundred ninety-seven".