61517362666 has 32 divisors (see below), whose sum is σ = 97227060480. Its totient is φ = 29134740096.

The previous prime is 61517362657. The next prime is 61517362667. The reversal of 61517362666 is 66626371516.

It is not an unprimeable number, because it can be changed into a prime (61517362667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16328715 + ... + 16332481.

It is an arithmetic number, because the mean of its divisors is an integer number (3038345640).

Almost surely, 2^61517362666 is an apocalyptic number.

61517362666 is a deficient number, since it is larger than the sum of its proper divisors (35709697814).

61517362666 is a wasteful number, since it uses less digits than its factorization.

61517362666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7158.

The product of its digits is 1632960, while the sum is 49.

The spelling of 61517362666 in words is "sixty-one billion, five hundred seventeen million, three hundred sixty-two thousand, six hundred sixty-six".