61655661010 has 32 divisors (see below), whose sum is σ = 119670566400. Its totient is φ = 22794387840.

The previous prime is 61655660993. The next prime is 61655661037. The reversal of 61655661010 is 1016655616.

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, 3949570 + ... + 3965149.

It is an arithmetic number, because the mean of its divisors is an integer number (3739705200).

Almost surely, 2^61655661010 is an apocalyptic number.

61655661010 is a deficient number, since it is larger than the sum of its proper divisors (58014905390).

61655661010 is a wasteful number, since it uses less digits than its factorization.

61655661010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7914786.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 61655661010 in words is "sixty-one billion, six hundred fifty-five million, six hundred sixty-one thousand, ten".