7855142247090 has 96 divisors (see below), whose sum is σ = 21174251904000. Its totient is φ = 2018281207680.

The previous prime is 7855142247079. The next prime is 7855142247091. The reversal of 7855142247090 is 907422415587.

7855142247090 is a `hidden beast` number, since 7 + 8 + 55 + 14 + 22 + 470 + 90 = 666.

It is a super-2 number, since 2×7855142247090² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7855142247091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5508390 + ... + 6786209.

It is an arithmetic number, because the mean of its divisors is an integer number (220565124000).

Almost surely, 2^{7855142247090} is an apocalyptic number.

7855142247090 is an abundant number, since it is smaller than the sum of its proper divisors (13319109656910).

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

7855142247090 is a wasteful number, since it uses less digits than its factorization.

7855142247090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12294872 (or 12294869 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 7855142247090 in words is "seven trillion, eight hundred fifty-five billion, one hundred forty-two million, two hundred forty-seven thousand, ninety".