6390039857355 has 480 divisors, whose sum is σ = 15050070604800. Its totient is φ = 2534221831680.

The previous prime is 6390039857323. The next prime is 6390039857459. The reversal of 6390039857355 is 5537589300936.

6390039857355 is a `hidden beast` number, since 6 + 3 + 9 + 0 + 0 + 3 + 9 + 8 + 573 + 55 = 666.

6390039857355 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6390039857355 - 2⁵ = 6390039857323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 6390039857292 and 6390039857301.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 5199380881 + ... + 5199382109.

It is an arithmetic number, because the mean of its divisors is an integer number (31354313760).

Almost surely, 2^{6390039857355} is an apocalyptic number.

6390039857355 is an abundant number, since it is smaller than the sum of its proper divisors (8660030747445).

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

6390039857355 is a wasteful number, since it uses less digits than its factorization.

6390039857355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 91854000, while the sum is 63.

The spelling of 6390039857355 in words is "six trillion, three hundred ninety billion, thirty-nine million, eight hundred fifty-seven thousand, three hundred fifty-five".