7671448891 has 2 divisors, whose sum is σ = 7671448892. Its totient is φ = 7671448890.

The previous prime is 7671448867. The next prime is 7671448901. The reversal of 7671448891 is 1988441767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7671448891 - 2⁵ = 7671448859 is a prime.

It is a super-2 number, since 2×7671448891² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7671448831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835724445 + 3835724446.

It is an arithmetic number, because the mean of its divisors is an integer number (3835724446).

Almost surely, 2^7671448891 is an apocalyptic number.

7671448891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671448891 is an equidigital number, since it uses as much as digits as its factorization.

7671448891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The square root of 7671448891 is about 87586.8077452307. The cubic root of 7671448891 is about 1972.2371358510.

The spelling of 7671448891 in words is "seven billion, six hundred seventy-one million, four hundred forty-eight thousand, eight hundred ninety-one".