45213251273 has 4 divisors (see below), whose sum is σ = 45227891220. Its totient is φ = 45198611328.

The previous prime is 45213251197. The next prime is 45213251297. The reversal of 45213251273 is 37215231254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37215231254 = 2 ⋅18607615627.

It can be written as a sum of positive squares in 2 ways, for example, as 20640494224 + 24572757049 = 143668^2 + 156757^2 .

It is a cyclic number.

It is not a de Polignac number, because 45213251273 - 2¹⁴ = 45213234889 is a prime.

It is a super-2 number, since 2×45213251273² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45213271273) 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, 7315340 + ... + 7321517.

It is an arithmetic number, because the mean of its divisors is an integer number (11306972805).

Almost surely, 2^45213251273 is an apocalyptic number.

It is an amenable number.

45213251273 is a deficient number, since it is larger than the sum of its proper divisors (14639947).

45213251273 is a wasteful number, since it uses less digits than its factorization.

45213251273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14639946.

The product of its digits is 50400, while the sum is 35.

The spelling of 45213251273 in words is "forty-five billion, two hundred thirteen million, two hundred fifty-one thousand, two hundred seventy-three".