7000421761 has 2 divisors, whose sum is σ = 7000421762. Its totient is φ = 7000421760.

The previous prime is 7000421723. The next prime is 7000421819. The reversal of 7000421761 is 1671240007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6960731761 + 39690000 = 83431^2 + 6300^2 .

It is a cyclic number.

It is not a de Polignac number, because 7000421761 - 2⁹ = 7000421249 is a prime.

It is a super-2 number, since 2×7000421761² = 98011809663764682242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7000421711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500210880 + 3500210881.

It is an arithmetic number, because the mean of its divisors is an integer number (3500210881).

Almost surely, 2^7000421761 is an apocalyptic number.

It is an amenable number.

7000421761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7000421761 is an equidigital number, since it uses as much as digits as its factorization.

7000421761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7000421761 is about 83668.5231195101. The cubic root of 7000421761 is about 1912.9696010374.

Adding to 7000421761 its reverse (1671240007), we get a palindrome (8671661768).

The spelling of 7000421761 in words is "seven billion, four hundred twenty-one thousand, seven hundred sixty-one".