974249552640 has 1152 divisors, whose sum is σ = 3998071848960. Its totient is φ = 196644962304.

The previous prime is 974249552609. The next prime is 974249552657. The reversal of 974249552640 is 46255942479.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1286987142 + ... + 1286987898.

It is an arithmetic number, because the mean of its divisors is an integer number (3470548480).

Almost surely, 2^974249552640 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 974249552640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1999035924480).

974249552640 is an abundant number, since it is smaller than the sum of its proper divisors (3023822296320).

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

974249552640 is a wasteful number, since it uses less digits than its factorization.

974249552640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 57.

The spelling of 974249552640 in words is "nine hundred seventy-four billion, two hundred forty-nine million, five hundred fifty-two thousand, six hundred forty".