7245577952221 has 8 divisors (see below), whose sum is σ = 8293783597184. Its totient is φ = 6200653077360.

The previous prime is 7245577952201. The next prime is 7245577952227. The reversal of 7245577952221 is 1222597755427.

7245577952221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7245577952221 - 2⁵ = 7245577952189 is a prime.

It is a super-2 number, since 2×7245577952221² (a number of 27 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 (7245577952227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820187790 + ... + 820196623.

It is an arithmetic number, because the mean of its divisors is an integer number (1036722949648).

Almost surely, 2^{7245577952221} is an apocalyptic number.

It is an amenable number.

7245577952221 is a deficient number, since it is larger than the sum of its proper divisors (1048205644963).

7245577952221 is a wasteful number, since it uses less digits than its factorization.

7245577952221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640385051.

The product of its digits is 24696000, while the sum is 58.

The spelling of 7245577952221 in words is "seven trillion, two hundred forty-five billion, five hundred seventy-seven million, nine hundred fifty-two thousand, two hundred twenty-one".