7161990264 has 384 divisors, whose sum is σ = 24782284800. Its totient is φ = 1835136000.

The previous prime is 7161990239. The next prime is 7161990271. The reversal of 7161990264 is 4620991617.

7161990264 is a `hidden beast` number, since 7 + 1 + 619 + 9 + 0 + 26 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 6063754 + ... + 6064934.

It is an arithmetic number, because the mean of its divisors is an integer number (64537200).

Almost surely, 2^7161990264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7161990264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12391142400).

7161990264 is an abundant number, since it is smaller than the sum of its proper divisors (17620294536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7161990264 is a wasteful number, since it uses less digits than its factorization.

7161990264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 7161990264 is about 84628.5428445982. The cubic root of 7161990264 is about 1927.5748095337.

The spelling of 7161990264 in words is "seven billion, one hundred sixty-one million, nine hundred ninety thousand, two hundred sixty-four".