45451320251 has 8 divisors (see below), whose sum is σ = 47020170624. Its totient is φ = 43888887360.

The previous prime is 45451320223. The next prime is 45451320253. The reversal of 45451320251 is 15202315454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45451320251 - 2²⁶ = 45384211387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45451320253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589960 + ... + 1618293.

It is an arithmetic number, because the mean of its divisors is an integer number (5877521328).

Almost surely, 2^45451320251 is an apocalyptic number.

45451320251 is a deficient number, since it is larger than the sum of its proper divisors (1568850373).

45451320251 is a wasteful number, since it uses less digits than its factorization.

45451320251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208741.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 45451320251 in words is "forty-five billion, four hundred fifty-one million, three hundred twenty thousand, two hundred fifty-one".