33497672397 has 16 divisors (see below), whose sum is σ = 53263380480. Its totient is φ = 18309286512.

The previous prime is 33497672363. The next prime is 33497672471. The reversal of 33497672397 is 79327679433.

It is a happy number.

It is not a de Polignac number, because 33497672397 - 2⁷ = 33497672269 is a prime.

It is a super-2 number, since 2×33497672397² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33497672397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33497670397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34676197 + ... + 34677162.

It is an arithmetic number, because the mean of its divisors is an integer number (3328961280).

Almost surely, 2^33497672397 is an apocalyptic number.

It is an amenable number.

33497672397 is a deficient number, since it is larger than the sum of its proper divisors (19765708083).

33497672397 is a wasteful number, since it uses less digits than its factorization.

33497672397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69353392.

The product of its digits is 36006768, while the sum is 60.

The spelling of 33497672397 in words is "thirty-three billion, four hundred ninety-seven million, six hundred seventy-two thousand, three hundred ninety-seven".