61198910655 has 16 divisors (see below), whose sum is σ = 97921474560. Its totient is φ = 32638346528.

The previous prime is 61198910653. The next prime is 61198910713. The reversal of 61198910655 is 55601989116.

It is a cyclic number.

It is not a de Polignac number, because 61198910655 - 2¹ = 61198910653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61198910598 and 61198910607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61198910653) 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, 656866 + ... + 744224.

It is an arithmetic number, because the mean of its divisors is an integer number (6120092160).

Almost surely, 2^61198910655 is an apocalyptic number.

61198910655 is a deficient number, since it is larger than the sum of its proper divisors (36722563905).

61198910655 is a wasteful number, since it uses less digits than its factorization.

61198910655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134070.

The product of its (nonzero) digits is 583200, while the sum is 51.

The spelling of 61198910655 in words is "sixty-one billion, one hundred ninety-eight million, nine hundred ten thousand, six hundred fifty-five".