61749929192 has 32 divisors (see below), whose sum is σ = 140104883520. Its totient is φ = 24907534080.

The previous prime is 61749929179. The next prime is 61749929237. The reversal of 61749929192 is 29192994716.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32430734 + ... + 32432637.

It is an arithmetic number, because the mean of its divisors is an integer number (4378277610).

Almost surely, 2^61749929192 is an apocalyptic number.

It is an amenable number.

61749929192 is an abundant number, since it is smaller than the sum of its proper divisors (78354954328).

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

61749929192 is a wasteful number, since it uses less digits than its factorization.

61749929192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64863401 (or 64863397 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 59.

The spelling of 61749929192 in words is "sixty-one billion, seven hundred forty-nine million, nine hundred twenty-nine thousand, one hundred ninety-two".