7842908361855 has 16 divisors (see below), whose sum is σ = 14341318147584. Its totient is φ = 3585329536800.

The previous prime is 7842908361851. The next prime is 7842908361943. The reversal of 7842908361855 is 5581638092487.

It is not a de Polignac number, because 7842908361855 - 2² = 7842908361851 is a prime.

It is a super-2 number, since 2×7842908361855² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842908361851) 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, 37347182571 + ... + 37347182780.

It is an arithmetic number, because the mean of its divisors is an integer number (896332384224).

It is a 1-persistent number, because it is pandigital, but 2⋅7842908361855 = 15685816723710 is not.

Almost surely, 2^{7842908361855} is an apocalyptic number.

7842908361855 is a deficient number, since it is larger than the sum of its proper divisors (6498409785729).

7842908361855 is a wasteful number, since it uses less digits than its factorization.

7842908361855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74694365366.

The product of its (nonzero) digits is 116121600, while the sum is 66.

The spelling of 7842908361855 in words is "seven trillion, eight hundred forty-two billion, nine hundred eight million, three hundred sixty-one thousand, eight hundred fifty-five".