45312221205 has 32 divisors (see below), whose sum is σ = 83153617920. Its totient is φ = 23386950720.

The previous prime is 45312221137. The next prime is 45312221233. The reversal of 45312221205 is 50212221354.

45312221205 is a `hidden beast` number, since 4 + 531 + 2 + 2 + 2 + 120 + 5 = 666.

It is not a de Polignac number, because 45312221205 - 2⁷ = 45312221077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5409462 + ... + 5417831.

It is an arithmetic number, because the mean of its divisors is an integer number (2598550560).

Almost surely, 2^45312221205 is an apocalyptic number.

45312221205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45312221205 is a deficient number, since it is larger than the sum of its proper divisors (37841396715).

45312221205 is a wasteful number, since it uses less digits than its factorization.

45312221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827338 (or 10827332 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 45312221205 its reverse (50212221354), we get a palindrome (95524442559).

The spelling of 45312221205 in words is "forty-five billion, three hundred twelve million, two hundred twenty-one thousand, two hundred five".