33897521001 has 4 divisors (see below), whose sum is σ = 45196694672. Its totient is φ = 22598347332.

The previous prime is 33897520973. The next prime is 33897521023. The reversal of 33897521001 is 10012579833.

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 not a de Polignac number, because 33897521001 - 2¹¹ = 33897518953 is a prime.

It is a super-2 number, since 2×33897521001² (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 (33897520001) 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, 5649586831 + ... + 5649586836.

It is an arithmetic number, because the mean of its divisors is an integer number (11299173668).

Almost surely, 2^33897521001 is an apocalyptic number.

It is an amenable number.

33897521001 is a deficient number, since it is larger than the sum of its proper divisors (11299173671).

33897521001 is a wasteful number, since it uses less digits than its factorization.

33897521001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299173670.

The product of its (nonzero) digits is 45360, while the sum is 39.

It can be divided in two parts, 338975 and 21001, that added together give a triangular number (359976 = T₈₄₈).

The spelling of 33897521001 in words is "thirty-three billion, eight hundred ninety-seven million, five hundred twenty-one thousand, one".