61749135718 has 8 divisors (see below), whose sum is σ = 95817624480. Its totient is φ = 29809927560.

The previous prime is 61749135677. The next prime is 61749135731. The reversal of 61749135718 is 81753194716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532320078 + ... + 532320193.

It is an arithmetic number, because the mean of its divisors is an integer number (11977203060).

Almost surely, 2^61749135718 is an apocalyptic number.

61749135718 is a deficient number, since it is larger than the sum of its proper divisors (34068488762).

61749135718 is a wasteful number, since it uses less digits than its factorization.

61749135718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064640302.

The product of its digits is 1270080, while the sum is 52.

The spelling of 61749135718 in words is "sixty-one billion, seven hundred forty-nine million, one hundred thirty-five thousand, seven hundred eighteen".