3920780857275 has 384 divisors, whose sum is σ = 8402890752000. Its totient is φ = 1777862338560.

The previous prime is 3920780857249. The next prime is 3920780857283. The reversal of 3920780857275 is 5727580870293.

3920780857275 is a `hidden beast` number, since 3 + 9 + 207 + 80 + 85 + 7 + 275 = 666.

It is not a de Polignac number, because 3920780857275 - 2¹² = 3920780853179 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1900522894 + ... + 1900524956.

It is an arithmetic number, because the mean of its divisors is an integer number (21882528000).

Almost surely, 2^{3920780857275} is an apocalyptic number.

3920780857275 is an abundant number, since it is smaller than the sum of its proper divisors (4482109894725).

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

3920780857275 is a wasteful number, since it uses less digits than its factorization.

3920780857275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 63.

The spelling of 3920780857275 in words is "three trillion, nine hundred twenty billion, seven hundred eighty million, eight hundred fifty-seven thousand, two hundred seventy-five".