451620315645158 has 32 divisors (see below), whose sum is σ = 739222521556608. Its totient is φ = 205224341414400.

The previous prime is 451620315645157. The next prime is 451620315645193. The reversal of 451620315645158 is 851546513026154.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451620315645157) 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, 1271895641 + ... + 1272250667.

It is an arithmetic number, because the mean of its divisors is an integer number (23100703798644).

Almost surely, 2^{451620315645158} is an apocalyptic number.

451620315645158 is a deficient number, since it is larger than the sum of its proper divisors (287602205911450).

451620315645158 is a wasteful number, since it uses less digits than its factorization.

451620315645158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371108.

The product of its (nonzero) digits is 17280000, while the sum is 56.

The spelling of 451620315645158 in words is "four hundred fifty-one trillion, six hundred twenty billion, three hundred fifteen million, six hundred forty-five thousand, one hundred fifty-eight".