453155520021 has 4 divisors (see below), whose sum is σ = 604207360032. Its totient is φ = 302103680012.

The previous prime is 453155520007. The next prime is 453155520113. The reversal of 453155520021 is 120025551354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 453155520021 - 2¹¹ = 453155517973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453155520221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75525920001 + ... + 75525920006.

It is an arithmetic number, because the mean of its divisors is an integer number (151051840008).

Almost surely, 2^453155520021 is an apocalyptic number.

It is an amenable number.

453155520021 is a deficient number, since it is larger than the sum of its proper divisors (151051840011).

453155520021 is a wasteful number, since it uses less digits than its factorization.

453155520021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151051840010.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 453155520021 in words is "four hundred fifty-three billion, one hundred fifty-five million, five hundred twenty thousand, twenty-one".