61737041918868 has 24 divisors (see below), whose sum is σ = 144285816887520. Its totient is φ = 20545768390560.

The previous prime is 61737041918861. The next prime is 61737041918873. The reversal of 61737041918868 is 86881914073716.

It is a super-2 number, since 2×61737041918868² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61737041918861) 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, 4155690063 + ... + 4155704918.

It is an arithmetic number, because the mean of its divisors is an integer number (6011909036980).

Almost surely, 2^{61737041918868} is an apocalyptic number.

It is an amenable number.

61737041918868 is an abundant number, since it is smaller than the sum of its proper divisors (82548774968652).

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

61737041918868 is a wasteful number, since it uses less digits than its factorization.

61737041918868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311395607 (or 8311395605 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 69.

The spelling of 61737041918868 in words is "sixty-one trillion, seven hundred thirty-seven billion, forty-one million, nine hundred eighteen thousand, eight hundred sixty-eight".