3977423274240 has 1080 divisors, whose sum is σ = 15772306556160. Its totient is φ = 956108095488.

The previous prime is 3977423274229. The next prime is 3977423274241. The reversal of 3977423274240 is 424723247793.

3977423274240 is a `hidden beast` number, since 3 + 9 + 7 + 74 + 2 + 327 + 4 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3977423274241) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 753439921 + ... + 753445199.

It is an arithmetic number, because the mean of its divisors is an integer number (14603987552).

Almost surely, 2^{3977423274240} is an apocalyptic number.

3977423274240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3977423274240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7886153278080).

3977423274240 is an abundant number, since it is smaller than the sum of its proper divisors (11794883281920).

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

3977423274240 is a wasteful number, since it uses less digits than its factorization.

3977423274240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381 (or 5345 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 54.

The spelling of 3977423274240 in words is "three trillion, nine hundred seventy-seven billion, four hundred twenty-three million, two hundred seventy-four thousand, two hundred forty".