74736691043820 has 384 divisors, whose sum is σ = 232544806502400. Its totient is φ = 17816978350080.

The previous prime is 74736691043809. The next prime is 74736691043821. The reversal of 74736691043820 is 2834019663747.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (74736691043821) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5839253781 + ... + 5839266579.

It is an arithmetic number, because the mean of its divisors is an integer number (605585433600).

Almost surely, 2^{74736691043820} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74736691043820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116272403251200).

74736691043820 is an abundant number, since it is smaller than the sum of its proper divisors (157808115458580).

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

74736691043820 is a wasteful number, since it uses less digits than its factorization.

74736691043820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14185 (or 14183 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 74736691043820 in words is "seventy-four trillion, seven hundred thirty-six billion, six hundred ninety-one million, forty-three thousand, eight hundred twenty".