45440542391 has 8 divisors (see below), whose sum is σ = 45489023664. Its totient is φ = 45392088960.

The previous prime is 45440542387. The next prime is 45440542421. The reversal of 45440542391 is 19324504454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45440542391 - 2² = 45440542387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45440542321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4944821 + ... + 4954001.

It is an arithmetic number, because the mean of its divisors is an integer number (5686127958).

Almost surely, 2^45440542391 is an apocalyptic number.

45440542391 is a deficient number, since it is larger than the sum of its proper divisors (48481273).

45440542391 is a wasteful number, since it uses less digits than its factorization.

45440542391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 45440542391 in words is "forty-five billion, four hundred forty million, five hundred forty-two thousand, three hundred ninety-one".