7213737081 has 8 divisors (see below), whose sum is σ = 9671456704. Its totient is φ = 4782587760.

The previous prime is 7213737077. The next prime is 7213737103. The reversal of 7213737081 is 1807373127.

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

It is not a de Polignac number, because 7213737081 - 2² = 7213737077 is a prime.

It is a super-2 number, since 2×7213737081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7213737001) 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, 6641941 + ... + 6643026.

It is an arithmetic number, because the mean of its divisors is an integer number (1208932088).

Almost surely, 2^7213737081 is an apocalyptic number.

It is an amenable number.

7213737081 is a deficient number, since it is larger than the sum of its proper divisors (2457719623).

7213737081 is a wasteful number, since it uses less digits than its factorization.

7213737081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13285151.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 7213737081 is about 84933.7216952136. The cubic root of 7213737081 is about 1932.2060451240.

The spelling of 7213737081 in words is "seven billion, two hundred thirteen million, seven hundred thirty-seven thousand, eighty-one".