61250661700 has 36 divisors (see below), whose sum is σ = 140732406612. Its totient is φ = 23059072000.

The previous prime is 61250661697. The next prime is 61250661721. The reversal of 61250661700 is 716605216.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1822948416 + 59427713284 = 42696^2 + 243778^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18013201 + ... + 18016600.

It is an arithmetic number, because the mean of its divisors is an integer number (3909233517).

Almost surely, 2^61250661700 is an apocalyptic number.

It is an amenable number.

61250661700 is an abundant number, since it is smaller than the sum of its proper divisors (79481744912).

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

61250661700 is a wasteful number, since it uses less digits than its factorization.

61250661700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36029832 (or 36029825 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 61250661700 in words is "sixty-one billion, two hundred fifty million, six hundred sixty-one thousand, seven hundred".