5491836381945 has 16 divisors (see below), whose sum is σ = 8789844978432. Its totient is φ = 2928010481280.

The previous prime is 5491836381869. The next prime is 5491836381961.

5491836381945 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5491836381945 - 2¹⁶ = 5491836316409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60510796 + ... + 60601485.

It is an arithmetic number, because the mean of its divisors is an integer number (549365311152).

Almost surely, 2^{5491836381945} is an apocalyptic number.

It is an amenable number.

5491836381945 is a deficient number, since it is larger than the sum of its proper divisors (3298008596487).

5491836381945 is a wasteful number, since it uses less digits than its factorization.

5491836381945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121115312.

The product of its digits is 111974400, while the sum is 66.

The spelling of 5491836381945 in words is "five trillion, four hundred ninety-one billion, eight hundred thirty-six million, three hundred eighty-one thousand, nine hundred forty-five".