1955226563208 has 24 divisors (see below), whose sum is σ = 5295405275550. Its totient is φ = 651742187712.

The previous prime is 1955226563203. The next prime is 1955226563249. The reversal of 1955226563208 is 8023656225591.

1955226563208 is a `hidden beast` number, since 1 + 9 + 5 + 52 + 2 + 6 + 563 + 20 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1334815136964 + 620411426244 = 1155342^2 + 787662^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1955226563203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13577962173 + ... + 13577962316.

Almost surely, 2^{1955226563208} is an apocalyptic number.

1955226563208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1955226563208 is an abundant number, since it is smaller than the sum of its proper divisors (3340178712342).

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

1955226563208 is a wasteful number, since it uses less digits than its factorization.

1955226563208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27155924501 (or 27155924494 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 1955226563208 in words is "one trillion, nine hundred fifty-five billion, two hundred twenty-six million, five hundred sixty-three thousand, two hundred eight".