3916978298640 has 320 divisors, whose sum is σ = 15492994099200. Its totient is φ = 899592998400.

The previous prime is 3916978298627. The next prime is 3916978298683. The reversal of 3916978298640 is 468928796193.

3916978298640 is a `hidden beast` number, since 391 + 6 + 97 + 8 + 2 + 98 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3886876 + ... + 4789755.

It is an arithmetic number, because the mean of its divisors is an integer number (48415606560).

Almost surely, 2^{3916978298640} is an apocalyptic number.

3916978298640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3916978298640 is an abundant number, since it is smaller than the sum of its proper divisors (11576015800560).

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

3916978298640 is a wasteful number, since it uses less digits than its factorization.

3916978298640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8676683 (or 8676671 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 3916978298640 in words is "three trillion, nine hundred sixteen billion, nine hundred seventy-eight million, two hundred ninety-eight thousand, six hundred forty".