74342187648 has 192 divisors, whose sum is σ = 222301778400. Its totient is φ = 23818389504.

The previous prime is 74342187629. The next prime is 74342187653. The reversal of 74342187648 is 84678124347.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 74342187594 and 74342187603.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7578715 + ... + 7588517.

Almost surely, 2^74342187648 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 74342187648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111150889200).

74342187648 is an abundant number, since it is smaller than the sum of its proper divisors (147959590752).

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

74342187648 is a wasteful number, since it uses less digits than its factorization.

74342187648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10079 (or 10064 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 54.

The spelling of 74342187648 in words is "seventy-four billion, three hundred forty-two million, one hundred eighty-seven thousand, six hundred forty-eight".