1615673225263 has 2 divisors, whose sum is σ = 1615673225264. Its totient is φ = 1615673225262.

The previous prime is 1615673225207. The next prime is 1615673225359. The reversal of 1615673225263 is 3625223765161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615673225263 is a prime.

It is a super-2 number, since 2×1615673225263² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615673225203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807836612631 + 807836612632.

It is an arithmetic number, because the mean of its divisors is an integer number (807836612632).

Almost surely, 2^{1615673225263} is an apocalyptic number.

1615673225263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615673225263 is an equidigital number, since it uses as much as digits as its factorization.

1615673225263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 49.

The spelling of 1615673225263 in words is "one trillion, six hundred fifteen billion, six hundred seventy-three million, two hundred twenty-five thousand, two hundred sixty-three".