7721052082390 has 16 divisors (see below), whose sum is σ = 13897926385200. Its totient is φ = 3088413580320.

The previous prime is 7721052082343. The next prime is 7721052082399. The reversal of 7721052082390 is 932802501277.

It is a super-2 number, since 2×7721052082390² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7721052082390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721052082399) 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, 6269761 + ... + 7399459.

It is an arithmetic number, because the mean of its divisors is an integer number (868620399075).

Almost surely, 2^{7721052082390} is an apocalyptic number.

7721052082390 is a deficient number, since it is larger than the sum of its proper divisors (6176874302810).

7721052082390 is a wasteful number, since it uses less digits than its factorization.

7721052082390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813167.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 7721052082390 in words is "seven trillion, seven hundred twenty-one billion, fifty-two million, eighty-two thousand, three hundred ninety".