61042658871 has 8 divisors (see below), whose sum is σ = 81396721264. Its totient is φ = 40691851200.

The previous prime is 61042658857. The next prime is 61042658891. The reversal of 61042658871 is 17885624016.

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

It is not a de Polignac number, because 61042658871 - 2⁹ = 61042658359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61042658871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61042658821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769576 + ... + 845181.

It is an arithmetic number, because the mean of its divisors is an integer number (10174590158).

Almost surely, 2^61042658871 is an apocalyptic number.

61042658871 is a deficient number, since it is larger than the sum of its proper divisors (20354062393).

61042658871 is a wasteful number, since it uses less digits than its factorization.

61042658871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627361.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 61042658871 in words is "sixty-one billion, forty-two million, six hundred fifty-eight thousand, eight hundred seventy-one".