33900533557 has 4 divisors (see below), whose sum is σ = 36982400256. Its totient is φ = 30818666860.

The previous prime is 33900533549. The next prime is 33900533573. The reversal of 33900533557 is 75533500933.

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 33900533557 - 2³ = 33900533549 is a prime.

It is a super-2 number, since 2×33900533557² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33900533057) 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, 1540933333 + ... + 1540933354.

It is an arithmetic number, because the mean of its divisors is an integer number (9245600064).

Almost surely, 2^33900533557 is an apocalyptic number.

It is an amenable number.

33900533557 is a deficient number, since it is larger than the sum of its proper divisors (3081866699).

33900533557 is a wasteful number, since it uses less digits than its factorization.

33900533557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081866698.

The product of its (nonzero) digits is 637875, while the sum is 43.

The spelling of 33900533557 in words is "thirty-three billion, nine hundred million, five hundred thirty-three thousand, five hundred fifty-seven".