1015604228691 has 20 divisors (see below), whose sum is σ = 1633840042912. Its totient is φ = 624987217008.

The previous prime is 1015604228629. The next prime is 1015604228773. The reversal of 1015604228691 is 1968224065101.

1015604228691 is a `hidden beast` number, since 1 + 0 + 1 + 5 + 60 + 422 + 86 + 91 = 666.

It is not a de Polignac number, because 1015604228691 - 2⁶ = 1015604228627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015604228491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 482242171 + ... + 482244276.

Almost surely, 2^{1015604228691} is an apocalyptic number.

1015604228691 is a deficient number, since it is larger than the sum of its proper divisors (618235814221).

1015604228691 is an equidigital number, since it uses as much as digits as its factorization.

1015604228691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964486472 (or 964486463 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 1015604228691 in words is "one trillion, fifteen billion, six hundred four million, two hundred twenty-eight thousand, six hundred ninety-one".