1915615013623 has 2 divisors, whose sum is σ = 1915615013624. Its totient is φ = 1915615013622.

The previous prime is 1915615013591. The next prime is 1915615013633. The reversal of 1915615013623 is 3263105165191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1915615013623 - 2⁵ = 1915615013591 is a prime.

It is a super-2 number, since 2×1915615013623² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1915615013623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1915615013633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957807506811 + 957807506812.

It is an arithmetic number, because the mean of its divisors is an integer number (957807506812).

Almost surely, 2^{1915615013623} is an apocalyptic number.

1915615013623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1915615013623 is an equidigital number, since it uses as much as digits as its factorization.

1915615013623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 1915615013623 in words is "one trillion, nine hundred fifteen billion, six hundred fifteen million, thirteen thousand, six hundred twenty-three".