53434945621 has 8 divisors (see below), whose sum is σ = 56251344320. Its totient is φ = 50618950272.

The previous prime is 53434945609. The next prime is 53434945667. The reversal of 53434945621 is 12654943435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53434945621 - 2²⁵ = 53401391189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53434945601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193096 + ... + 379678.

It is an arithmetic number, because the mean of its divisors is an integer number (7031418040).

Almost surely, 2^53434945621 is an apocalyptic number.

It is an amenable number.

53434945621 is a deficient number, since it is larger than the sum of its proper divisors (2816398699).

53434945621 is a wasteful number, since it uses less digits than its factorization.

53434945621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201675.

The product of its digits is 1555200, while the sum is 46.

The spelling of 53434945621 in words is "fifty-three billion, four hundred thirty-four million, nine hundred forty-five thousand, six hundred twenty-one".