1453806536121 has 21 divisors (see below), whose sum is σ = 2179761491551. Its totient is φ = 969182654112.

The previous prime is 1453806536089. The next prime is 1453806536227. The reversal of 1453806536121 is 1216356083541.

The square root of 1453806536121 is 1205739.

It is a perfect power (a square), and thus also a powerful number.

1453806536121 is a `hidden beast` number, since 1 + 4 + 538 + 0 + 6 + 53 + 61 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 754683125625 + 699123410496 = 868725^2 + 836136^2 .

It is not a de Polignac number, because 1453806536121 - 2⁵ = 1453806536089 is a prime.

It is a super-2 number, since 2×1453806536121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453806536321) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 32532625 + ... + 32577281.

Almost surely, 2^{1453806536121} is an apocalyptic number.

1453806536121 is the 1205739-th square number.

1453806536121 is the 602870-th centered octagonal number.

It is an amenable number.

1453806536121 is a deficient number, since it is larger than the sum of its proper divisors (725954955430).

1453806536121 is an frugal number, since it uses more digits than its factorization.

1453806536121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89332 (or 44660 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1453806536121 in words is "one trillion, four hundred fifty-three billion, eight hundred six million, five hundred thirty-six thousand, one hundred twenty-one".