556115720061 has 32 divisors (see below), whose sum is σ = 828015003648. Its totient is φ = 329106551040.

The previous prime is 556115720057. The next prime is 556115720071. The reversal of 556115720061 is 160027511655.

It is a happy number.

It is not a de Polignac number, because 556115720061 - 2² = 556115720057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556115720011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257550 + ... + 1085616.

It is an arithmetic number, because the mean of its divisors is an integer number (25875468864).

Almost surely, 2^556115720061 is an apocalyptic number.

It is an amenable number.

556115720061 is a deficient number, since it is larger than the sum of its proper divisors (271899283587).

556115720061 is a wasteful number, since it uses less digits than its factorization.

556115720061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828561.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 556115720061 in words is "five hundred fifty-six billion, one hundred fifteen million, seven hundred twenty thousand, sixty-one".