61010605560 has 128 divisors (see below), whose sum is σ = 185790024000. Its totient is φ = 16024928256.

The previous prime is 61010605493. The next prime is 61010605561. The reversal of 61010605560 is 6550601016.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61010605561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7082536 + ... + 7091144.

Almost surely, 2^61010605560 is an apocalyptic number.

61010605560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61010605560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92895012000).

61010605560 is an abundant number, since it is smaller than the sum of its proper divisors (124779418440).

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

61010605560 is a wasteful number, since it uses less digits than its factorization.

61010605560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505 (or 9501 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 61010605560 in words is "sixty-one billion, ten million, six hundred five thousand, five hundred sixty".