1615111055497 has 2 divisors, whose sum is σ = 1615111055498. Its totient is φ = 1615111055496.

The previous prime is 1615111055429. The next prime is 1615111055521. The reversal of 1615111055497 is 7945501115161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136656631881 + 478454423616 = 1066141^2 + 691704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1615111055497 - 2²³ = 1615102666889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1615111055797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807555527748 + 807555527749.

It is an arithmetic number, because the mean of its divisors is an integer number (807555527749).

Almost surely, 2^{1615111055497} is an apocalyptic number.

It is an amenable number.

1615111055497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615111055497 is an equidigital number, since it uses as much as digits as its factorization.

1615111055497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 46.

The spelling of 1615111055497 in words is "one trillion, six hundred fifteen billion, one hundred eleven million, fifty-five thousand, four hundred ninety-seven".