45189230721490 has 32 divisors (see below), whose sum is σ = 82259608780080. Its totient is φ = 17871496473600.

The previous prime is 45189230721461. The next prime is 45189230721493. The reversal of 45189230721490 is 9412703298154.

It can be written as a sum of positive squares in 8 ways, for example, as 562969597969 + 44626261123521 = 750313^2 + 6680289^2 .

It is not an unprimeable number, because it can be changed into a prime (45189230721493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13009600 + ... + 16112980.

Almost surely, 2^{45189230721490} is an apocalyptic number.

45189230721490 is a deficient number, since it is larger than the sum of its proper divisors (37070378058590).

45189230721490 is a wasteful number, since it uses less digits than its factorization.

45189230721490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119838.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 45189230721490 in words is "forty-five trillion, one hundred eighty-nine billion, two hundred thirty million, seven hundred twenty-one thousand, four hundred ninety".