74102312840 has 64 divisors (see below), whose sum is σ = 170335699200. Its totient is φ = 29006595072.

The previous prime is 74102312839. The next prime is 74102312861. The reversal of 74102312840 is 4821320147.

It is a junction number, because it is equal to n+sod(n) for n = 74102312797 and 74102312806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253319 + ... + 460841.

It is an arithmetic number, because the mean of its divisors is an integer number (2661495300).

Almost surely, 2^74102312840 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 74102312840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85167849600).

74102312840 is an abundant number, since it is smaller than the sum of its proper divisors (96233386360).

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

74102312840 is a wasteful number, since it uses less digits than its factorization.

74102312840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207726 (or 207722 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 74102312840 its reverse (4821320147), we get a palindrome (78923632987).

The spelling of 74102312840 in words is "seventy-four billion, one hundred two million, three hundred twelve thousand, eight hundred forty".