61560660700 has 144 divisors (see below), whose sum is σ = 169693138944. Its totient is φ = 18825580800.

The previous prime is 61560660697. The next prime is 61560660703. The reversal of 61560660700 is 706606516.

It is a happy number.

61560660700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61560660697) and next prime (61560660703).

It is a self number, because there is not a number n which added to its sum of digits gives 61560660700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61560660703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332677 + ... + 483523.

It is an arithmetic number, because the mean of its divisors is an integer number (1178424576).

Almost surely, 2^61560660700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61560660700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84846569472).

61560660700 is an abundant number, since it is smaller than the sum of its proper divisors (108132478244).

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

61560660700 is a wasteful number, since it uses less digits than its factorization.

61560660700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150932 (or 150925 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 61560660700 in words is "sixty-one billion, five hundred sixty million, six hundred sixty thousand, seven hundred".