7212537677 has 2 divisors, whose sum is σ = 7212537678. Its totient is φ = 7212537676.

The previous prime is 7212537557. The next prime is 7212537707. The reversal of 7212537677 is 7767352127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5531045641 + 1681492036 = 74371^2 + 41006^2 .

It is a cyclic number.

It is not a de Polignac number, because 7212537677 - 2²⁴ = 7195760461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7212536677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606268838 + 3606268839.

It is an arithmetic number, because the mean of its divisors is an integer number (3606268839).

Almost surely, 2^7212537677 is an apocalyptic number.

It is an amenable number.

7212537677 is a deficient number, since it is larger than the sum of its proper divisors (1).

7212537677 is an equidigital number, since it uses as much as digits as its factorization.

7212537677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864360, while the sum is 47.

The square root of 7212537677 is about 84926.6605784073. The cubic root of 7212537677 is about 1932.0989520373.

The spelling of 7212537677 in words is "seven billion, two hundred twelve million, five hundred thirty-seven thousand, six hundred seventy-seven".