799131001421 has 4 divisors (see below), whose sum is σ = 799578194592. Its totient is φ = 798683808252.

The previous prime is 799131001367. The next prime is 799131001423. The reversal of 799131001421 is 124100131997.

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 799131001421 - 2²² = 799126807117 is a prime.

It is a super-2 number, since 2×799131001421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799131001423) 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, 223593905 + ... + 223597478.

It is an arithmetic number, because the mean of its divisors is an integer number (199894548648).

Almost surely, 2^799131001421 is an apocalyptic number.

It is an amenable number.

799131001421 is a deficient number, since it is larger than the sum of its proper divisors (447193171).

799131001421 is a wasteful number, since it uses less digits than its factorization.

799131001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447193170.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 799131001421 in words is "seven hundred ninety-nine billion, one hundred thirty-one million, one thousand, four hundred twenty-one".