61742989328 has 80 divisors (see below), whose sum is σ = 124597025280. Its totient is φ = 29619878400.

The previous prime is 61742989309. The next prime is 61742989337. The reversal of 61742989328 is 82398924716.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9660758 + ... + 9667146.

It is an arithmetic number, because the mean of its divisors is an integer number (1557462816).

Almost surely, 2^61742989328 is an apocalyptic number.

It is an amenable number.

61742989328 is an abundant number, since it is smaller than the sum of its proper divisors (62854035952).

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

61742989328 is a wasteful number, since it uses less digits than its factorization.

61742989328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6696 (or 6690 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 59.

The spelling of 61742989328 in words is "sixty-one billion, seven hundred forty-two million, nine hundred eighty-nine thousand, three hundred twenty-eight".