97777105331 has 2 divisors, whose sum is σ = 97777105332. Its totient is φ = 97777105330.

The previous prime is 97777105271. The next prime is 97777105343. The reversal of 97777105331 is 13350177779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97777105331 - 2¹⁴ = 97777088947 is a prime.

It is a super-2 number, since 2×97777105331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97777105331.

It is not a weakly prime, because it can be changed into another prime (97777105381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48888552665 + 48888552666.

It is an arithmetic number, because the mean of its divisors is an integer number (48888552666).

Almost surely, 2^97777105331 is an apocalyptic number.

97777105331 is a deficient number, since it is larger than the sum of its proper divisors (1).

97777105331 is an equidigital number, since it uses as much as digits as its factorization.

97777105331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972405, while the sum is 50.

The spelling of 97777105331 in words is "ninety-seven billion, seven hundred seventy-seven million, one hundred five thousand, three hundred thirty-one".