1955900327865 has 32 divisors (see below), whose sum is σ = 3414001862016. Its totient is φ = 948296770560.

The previous prime is 1955900327833. The next prime is 1955900327933. The reversal of 1955900327865 is 5687230095591.

It is not a de Polignac number, because 1955900327865 - 2⁵ = 1955900327833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1955900327799 and 1955900327808.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12497377 + ... + 12652913.

It is an arithmetic number, because the mean of its divisors is an integer number (106687558188).

Almost surely, 2^{1955900327865} is an apocalyptic number.

1955900327865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1955900327865 is a deficient number, since it is larger than the sum of its proper divisors (1458101534151).

1955900327865 is a wasteful number, since it uses less digits than its factorization.

1955900327865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231769.

The product of its (nonzero) digits is 20412000, while the sum is 60.

The spelling of 1955900327865 in words is "one trillion, nine hundred fifty-five billion, nine hundred million, three hundred twenty-seven thousand, eight hundred sixty-five".