45155114021 has 4 divisors (see below), whose sum is σ = 47118379872. Its totient is φ = 43191848172.

The previous prime is 45155113973. The next prime is 45155114023. The reversal of 45155114021 is 12041155154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45155114021 - 2¹⁸ = 45154851877 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 (45155114023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981632891 + ... + 981632936.

It is an arithmetic number, because the mean of its divisors is an integer number (11779594968).

Almost surely, 2^45155114021 is an apocalyptic number.

It is an amenable number.

45155114021 is a deficient number, since it is larger than the sum of its proper divisors (1963265851).

45155114021 is a wasteful number, since it uses less digits than its factorization.

45155114021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963265850.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 45155114021 its reverse (12041155154), we get a palindrome (57196269175).

The spelling of 45155114021 in words is "forty-five billion, one hundred fifty-five million, one hundred fourteen thousand, twenty-one".