2945559598891 has 24 divisors (see below), whose sum is σ = 3682803141024. Its totient is φ = 2306526243840.

The previous prime is 2945559598873. The next prime is 2945559598907. The reversal of 2945559598891 is 1988959555492.

It is not a de Polignac number, because 2945559598891 - 2³¹ = 2943412115243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2945559598831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12719820 + ... + 12949321.

It is an arithmetic number, because the mean of its divisors is an integer number (153450130876).

Almost surely, 2^{2945559598891} is an apocalyptic number.

2945559598891 is a deficient number, since it is larger than the sum of its proper divisors (737243542133).

2945559598891 is a wasteful number, since it uses less digits than its factorization.

2945559598891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25669271 (or 25669258 counting only the distinct ones).

The product of its digits is 2099520000, while the sum is 79.

The spelling of 2945559598891 in words is "two trillion, nine hundred forty-five billion, five hundred fifty-nine million, five hundred ninety-eight thousand, eight hundred ninety-one".