978446674740 has 48 divisors (see below), whose sum is σ = 2739694366080. Its totient is φ = 260914953600.

The previous prime is 978446674727. The next prime is 978446674741. The reversal of 978446674740 is 47476644879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978446674741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6264921 + ... + 6419199.

It is an arithmetic number, because the mean of its divisors is an integer number (57076965960).

Almost surely, 2^978446674740 is an apocalyptic number.

It is an amenable number.

978446674740 is an abundant number, since it is smaller than the sum of its proper divisors (1761247691340).

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

978446674740 is a wasteful number, since it uses less digits than its factorization.

978446674740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259992 (or 259990 counting only the distinct ones).

The product of its (nonzero) digits is 227598336, while the sum is 66.

The spelling of 978446674740 in words is "nine hundred seventy-eight billion, four hundred forty-six million, six hundred seventy-four thousand, seven hundred forty".