61025074728 has 32 divisors (see below), whose sum is σ = 156686004960. Its totient is φ = 19791915840.

The previous prime is 61025074727. The next prime is 61025074787. The reversal of 61025074728 is 82747052016.

It is a self number, because there is not a number n which added to its sum of digits gives 61025074728.

It is not an unprimeable number, because it can be changed into a prime (61025074723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34360078 + ... + 34361853.

It is an arithmetic number, because the mean of its divisors is an integer number (4896437655).

Almost surely, 2^61025074728 is an apocalyptic number.

It is an amenable number.

61025074728 is an abundant number, since it is smaller than the sum of its proper divisors (95660930232).

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

61025074728 is a wasteful number, since it uses less digits than its factorization.

61025074728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68721977 (or 68721973 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 61025074728 in words is "sixty-one billion, twenty-five million, seventy-four thousand, seven hundred twenty-eight".