7422051681 has 64 divisors (see below), whose sum is σ = 12659328000. Its totient is φ = 4250413440.

The previous prime is 7422051629. The next prime is 7422051731. The reversal of 7422051681 is 1861502247.

7422051681 is a `hidden beast` number, since 7 + 42 + 20 + 516 + 81 = 666.

It is not a de Polignac number, because 7422051681 - 2³⁰ = 6348309857 is a prime.

It is a super-2 number, since 2×7422051681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7422051601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2498365 + ... + 2501333.

It is an arithmetic number, because the mean of its divisors is an integer number (197802000).

Almost surely, 2^7422051681 is an apocalyptic number.

It is an amenable number.

7422051681 is a deficient number, since it is larger than the sum of its proper divisors (5237276319).

7422051681 is a wasteful number, since it uses less digits than its factorization.

7422051681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7422051681 is about 86151.3301174161. The cubic root of 7422051681 is about 1950.6289166658.

The spelling of 7422051681 in words is "seven billion, four hundred twenty-two million, fifty-one thousand, six hundred eighty-one".