451215525213 has 32 divisors (see below), whose sum is σ = 690364846080. Its totient is φ = 290965912560.

The previous prime is 451215525179. The next prime is 451215525227. The reversal of 451215525213 is 312525512154.

451215525213 is a `hidden beast` number, since 4 + 5 + 121 + 5 + 5 + 2 + 521 + 3 = 666.

It is not a de Polignac number, because 451215525213 - 2⁶ = 451215525149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451215525283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1614070 + ... + 1872872.

It is an arithmetic number, because the mean of its divisors is an integer number (21573901440).

Almost surely, 2^451215525213 is an apocalyptic number.

It is an amenable number.

451215525213 is a deficient number, since it is larger than the sum of its proper divisors (239149320867).

451215525213 is a wasteful number, since it uses less digits than its factorization.

451215525213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260926 (or 260920 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The spelling of 451215525213 in words is "four hundred fifty-one billion, two hundred fifteen million, five hundred twenty-five thousand, two hundred thirteen".