61742109190 has 32 divisors (see below), whose sum is σ = 116419135680. Its totient is φ = 23531126784.

The previous prime is 61742109181. The next prime is 61742109197. The reversal of 61742109190 is 9190124716.

It is a super-2 number, since 2×61742109190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61742109197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463155 + ... + 581374.

It is an arithmetic number, because the mean of its divisors is an integer number (3638097990).

Almost surely, 2^61742109190 is an apocalyptic number.

61742109190 is a deficient number, since it is larger than the sum of its proper divisors (54677026490).

61742109190 is a wasteful number, since it uses less digits than its factorization.

61742109190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044816.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 61742109190 in words is "sixty-one billion, seven hundred forty-two million, one hundred nine thousand, one hundred ninety".