61281606750 has 128 divisors (see below), whose sum is σ = 188257305600. Its totient is φ = 12929731200.

The previous prime is 61281606721. The next prime is 61281606769. The reversal of 61281606750 is 5760618216.

61281606750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 380700 + ... + 517199.

It is an arithmetic number, because the mean of its divisors is an integer number (1470760200).

Almost surely, 2^61281606750 is an apocalyptic number.

61281606750 is an abundant number, since it is smaller than the sum of its proper divisors (126975698850).

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

61281606750 is a wasteful number, since it uses less digits than its factorization.

61281606750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897939 (or 897929 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 61281606750 in words is "sixty-one billion, two hundred eighty-one million, six hundred six thousand, seven hundred fifty".