33631778049 has 4 divisors (see below), whose sum is σ = 44842370736. Its totient is φ = 22421185364.

The previous prime is 33631778027. The next prime is 33631778099. The reversal of 33631778049 is 94087713633.

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: 94087713633 = 3 ⋅31362571211.

It is a cyclic number.

It is not a de Polignac number, because 33631778049 - 2⁸ = 33631777793 is a prime.

It is a super-2 number, since 2×33631778049² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33631777992 and 33631778010.

It is not an unprimeable number, because it can be changed into a prime (33631778099) 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, 5605296339 + ... + 5605296344.

It is an arithmetic number, because the mean of its divisors is an integer number (11210592684).

Almost surely, 2^33631778049 is an apocalyptic number.

It is an amenable number.

33631778049 is a deficient number, since it is larger than the sum of its proper divisors (11210592687).

33631778049 is a wasteful number, since it uses less digits than its factorization.

33631778049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11210592686.

The product of its (nonzero) digits is 2286144, while the sum is 51.

The spelling of 33631778049 in words is "thirty-three billion, six hundred thirty-one million, seven hundred seventy-eight thousand, forty-nine".