61841974159 has 16 divisors (see below), whose sum is σ = 72601289728. Its totient is φ = 51564421152.

The previous prime is 61841974151. The next prime is 61841974169. The reversal of 61841974159 is 95147914816.

61841974159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61841974159 - 2³ = 61841974151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61841974151) 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, 1441432 + ... + 1483714.

It is an arithmetic number, because the mean of its divisors is an integer number (4537580608).

Almost surely, 2^61841974159 is an apocalyptic number.

61841974159 is a deficient number, since it is larger than the sum of its proper divisors (10759315569).

61841974159 is a wasteful number, since it uses less digits than its factorization.

61841974159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47974.

The product of its digits is 2177280, while the sum is 55.

The spelling of 61841974159 in words is "sixty-one billion, eight hundred forty-one million, nine hundred seventy-four thousand, one hundred fifty-nine".