4996535617921 has 4 divisors (see below), whose sum is σ = 5018546788272. Its totient is φ = 4974524447572.

The previous prime is 4996535617901. The next prime is 4996535617939. The reversal of 4996535617921 is 1297165356994.

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 4996535617921 - 2²⁹ = 4995998747009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4996535617901) 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, 11005584835 + ... + 11005585288.

It is an arithmetic number, because the mean of its divisors is an integer number (1254636697068).

Almost surely, 2^{4996535617921} is an apocalyptic number.

It is an amenable number.

4996535617921 is a deficient number, since it is larger than the sum of its proper divisors (22011170351).

4996535617921 is a wasteful number, since it uses less digits than its factorization.

4996535617921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22011170350.

The product of its digits is 110224800, while the sum is 67.

The spelling of 4996535617921 in words is "four trillion, nine hundred ninety-six billion, five hundred thirty-five million, six hundred seventeen thousand, nine hundred twenty-one".