615661011066 has 32 divisors (see below), whose sum is σ = 1253889331200. Its totient is φ = 201483307760.

The previous prime is 615661011019. The next prime is 615661011157. The reversal of 615661011066 is 660110166516.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2921646 + ... + 3125273.

It is an arithmetic number, because the mean of its divisors is an integer number (39184041600).

Almost surely, 2^615661011066 is an apocalyptic number.

615661011066 is an abundant number, since it is smaller than the sum of its proper divisors (638228320134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

615661011066 is a wasteful number, since it uses less digits than its factorization.

615661011066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047234.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 615661011066 in words is "six hundred fifteen billion, six hundred sixty-one million, eleven thousand, sixty-six".