1452815898021 has 14 divisors (see below), whose sum is σ = 2178227403750. Its totient is φ = 968543931528.

The previous prime is 1452815897993. The next prime is 1452815898031. The reversal of 1452815898021 is 1208985182541.

1452815898021 is a `hidden beast` number, since 1 + 4 + 52 + 8 + 1 + 589 + 8 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1447302835521 + 5513062500 = 1203039^2 + 74250^2 .

It is not a de Polignac number, because 1452815898021 - 2¹⁹ = 1452815373733 is a prime.

It is a super-2 number, since 2×1452815898021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452815898031) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 996443646 + ... + 996445103.

Almost surely, 2^{1452815898021} is an apocalyptic number.

It is an amenable number.

1452815898021 is a deficient number, since it is larger than the sum of its proper divisors (725411505729).

1452815898021 is an frugal number, since it uses more digits than its factorization.

1452815898021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992888767 (or 1992888752 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 54.

The spelling of 1452815898021 in words is "one trillion, four hundred fifty-two billion, eight hundred fifteen million, eight hundred ninety-eight thousand, twenty-one".