61560402220 has 24 divisors (see below), whose sum is σ = 129363845184. Its totient is φ = 24607589376.

The previous prime is 61560402203. The next prime is 61560402247. The reversal of 61560402220 is 2220406516.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005237 + ... + 1064716.

It is an arithmetic number, because the mean of its divisors is an integer number (5390160216).

Almost surely, 2^61560402220 is an apocalyptic number.

It is an amenable number.

61560402220 is an abundant number, since it is smaller than the sum of its proper divisors (67803442964).

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

61560402220 is a wasteful number, since it uses less digits than its factorization.

61560402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071449 (or 2071447 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 61560402220 its reverse (2220406516), we get a palindrome (63780808736).

The spelling of 61560402220 in words is "sixty-one billion, five hundred sixty million, four hundred two thousand, two hundred twenty".