699501201421 has 4 divisors (see below), whose sum is σ = 763092219744. Its totient is φ = 635910183100.

The previous prime is 699501201401. The next prime is 699501201467. The reversal of 699501201421 is 124102105996.

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 699501201421 - 2⁵ = 699501201389 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699501201401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31795509145 + ... + 31795509166.

It is an arithmetic number, because the mean of its divisors is an integer number (190773054936).

Almost surely, 2^699501201421 is an apocalyptic number.

It is an amenable number.

699501201421 is a deficient number, since it is larger than the sum of its proper divisors (63591018323).

699501201421 is a wasteful number, since it uses less digits than its factorization.

699501201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63591018322.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 699501201421 in words is "six hundred ninety-nine billion, five hundred one million, two hundred one thousand, four hundred twenty-one".