861157015203 has 8 divisors (see below), whose sum is σ = 1148984652816. Its totient is φ = 573717027200.

The previous prime is 861157015139. The next prime is 861157015237. The reversal of 861157015203 is 302510751168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861157015203 - 2⁶ = 861157015139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861157015273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96907218 + ... + 96916103.

It is an arithmetic number, because the mean of its divisors is an integer number (143623081602).

Almost surely, 2^861157015203 is an apocalyptic number.

861157015203 is a deficient number, since it is larger than the sum of its proper divisors (287827637613).

861157015203 is a wasteful number, since it uses less digits than its factorization.

861157015203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193824805.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 861157015203 in words is "eight hundred sixty-one billion, one hundred fifty-seven million, fifteen thousand, two hundred three".