61001257104 has 30 divisors (see below), whose sum is σ = 170718796326. Its totient is φ = 20333752320.

The previous prime is 61001257039. The next prime is 61001257151. The reversal of 61001257104 is 40175210016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33094886400 + 27906370704 = 181920^2 + 167052^2 .

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 5 ways as a sum of consecutive naturals, for example, 211809777 + ... + 211810064.

Almost surely, 2^61001257104 is an apocalyptic number.

It is an amenable number.

61001257104 is an abundant number, since it is smaller than the sum of its proper divisors (109717539222).

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

61001257104 is a wasteful number, since it uses less digits than its factorization.

61001257104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423619855 (or 423619846 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 61001257104 in words is "sixty-one billion, one million, two hundred fifty-seven thousand, one hundred four".