53890866433 has 4 divisors (see below), whose sum is σ = 54213566400. Its totient is φ = 53568166468.

The previous prime is 53890866389. The next prime is 53890866443. The reversal of 53890866433 is 33466809835.

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 53890866433 - 2¹⁷ = 53890735361 is a prime.

It is a super-2 number, since 2×53890866433² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53890866443) 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, 161349733 + ... + 161350066.

It is an arithmetic number, because the mean of its divisors is an integer number (13553391600).

Almost surely, 2^53890866433 is an apocalyptic number.

It is an amenable number.

53890866433 is a deficient number, since it is larger than the sum of its proper divisors (322699967).

53890866433 is a wasteful number, since it uses less digits than its factorization.

53890866433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322699966.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 53890866433 in words is "fifty-three billion, eight hundred ninety million, eight hundred sixty-six thousand, four hundred thirty-three".