61160651604 has 36 divisors (see below), whose sum is σ = 166492886196. Its totient is φ = 18818661888.

The previous prime is 61160651561. The next prime is 61160651609. The reversal of 61160651604 is 40615606116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38534475204 + 22626176400 = 196302^2 + 150420^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61160651609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65342109 + ... + 65343044.

Almost surely, 2^61160651604 is an apocalyptic number.

It is an amenable number.

61160651604 is an abundant number, since it is smaller than the sum of its proper divisors (105332234592).

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

61160651604 is a wasteful number, since it uses less digits than its factorization.

61160651604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130685176 (or 130685171 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 61160651604 in words is "sixty-one billion, one hundred sixty million, six hundred fifty-one thousand, six hundred four".