7211405979673 has 4 divisors (see below), whose sum is σ = 8241606833920. Its totient is φ = 6181205125428.

The previous prime is 7211405979607. The next prime is 7211405979691. The reversal of 7211405979673 is 3769795041127.

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 7211405979673 - 2⁹ = 7211405979161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7211405979073) 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, 515100427113 + ... + 515100427126.

It is an arithmetic number, because the mean of its divisors is an integer number (2060401708480).

Almost surely, 2^{7211405979673} is an apocalyptic number.

It is an amenable number.

7211405979673 is a deficient number, since it is larger than the sum of its proper divisors (1030200854247).

7211405979673 is a wasteful number, since it uses less digits than its factorization.

7211405979673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030200854246.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The spelling of 7211405979673 in words is "seven trillion, two hundred eleven billion, four hundred five million, nine hundred seventy-nine thousand, six hundred seventy-three".