45138158102621 has 4 divisors (see below), whose sum is σ = 45878127907644. Its totient is φ = 44398188297600.

The previous prime is 45138158102579. The next prime is 45138158102683. The reversal of 45138158102621 is 12620185183154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22670453822500 + 22467704280121 = 4761350^2 + 4740011^2 .

It is a cyclic number.

It is not a de Polignac number, because 45138158102621 - 2²⁶ = 45138090993757 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 (45138158102221) 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, 369984902420 + ... + 369984902541.

It is an arithmetic number, because the mean of its divisors is an integer number (11469531976911).

Almost surely, 2^{45138158102621} is an apocalyptic number.

It is an amenable number.

45138158102621 is a deficient number, since it is larger than the sum of its proper divisors (739969805023).

45138158102621 is an equidigital number, since it uses as much as digits as its factorization.

45138158102621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739969805022.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 45138158102621 in words is "forty-five trillion, one hundred thirty-eight billion, one hundred fifty-eight million, one hundred two thousand, six hundred twenty-one".