7426855145864 has 64 divisors (see below), whose sum is σ = 17372245357440. Its totient is φ = 2891785628160.

The previous prime is 7426855145839. The next prime is 7426855145867. The reversal of 7426855145864 is 4685415586247.

It is a self number, because there is not a number n which added to its sum of digits gives 7426855145864.

It is not an unprimeable number, because it can be changed into a prime (7426855145867) 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, 2743709 + ... + 4730924.

It is an arithmetic number, because the mean of its divisors is an integer number (271441333710).

Almost surely, 2^{7426855145864} is an apocalyptic number.

It is an amenable number.

7426855145864 is an abundant number, since it is smaller than the sum of its proper divisors (9945390211576).

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

7426855145864 is a wasteful number, since it uses less digits than its factorization.

7426855145864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476270 (or 7476266 counting only the distinct ones).

The product of its digits is 258048000, while the sum is 65.

The spelling of 7426855145864 in words is "seven trillion, four hundred twenty-six billion, eight hundred fifty-five million, one hundred forty-five thousand, eight hundred sixty-four".