451215525021 has 16 divisors (see below), whose sum is σ = 602219856000. Its totient is φ = 300510908928.

The previous prime is 451215524999. The next prime is 451215525049. The reversal of 451215525021 is 120525512154.

It is not a de Polignac number, because 451215525021 - 2¹¹ = 451215522973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451215525071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15392040 + ... + 15421326.

It is an arithmetic number, because the mean of its divisors is an integer number (37638741000).

Almost surely, 2^451215525021 is an apocalyptic number.

It is an amenable number.

451215525021 is a deficient number, since it is larger than the sum of its proper divisors (151004330979).

451215525021 is a wasteful number, since it uses less digits than its factorization.

451215525021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34228.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 451215525021 in words is "four hundred fifty-one billion, two hundred fifteen million, five hundred twenty-five thousand, twenty-one".