33772879401 has 4 divisors (see below), whose sum is σ = 45030505872. Its totient is φ = 22515252932.

The previous prime is 33772879391. The next prime is 33772879519. The reversal of 33772879401 is 10497827733.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10497827733 = 3 ⋅3499275911.

It is a cyclic number.

It is not a de Polignac number, because 33772879401 - 2⁵ = 33772879369 is a prime.

It is a super-2 number, since 2×33772879401² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33772877401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5628813231 + ... + 5628813236.

It is an arithmetic number, because the mean of its divisors is an integer number (11257626468).

Almost surely, 2^33772879401 is an apocalyptic number.

It is an amenable number.

33772879401 is a deficient number, since it is larger than the sum of its proper divisors (11257626471).

33772879401 is a wasteful number, since it uses less digits than its factorization.

33772879401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257626470.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 33772879401 in words is "thirty-three billion, seven hundred seventy-two million, eight hundred seventy-nine thousand, four hundred one".