93797787481 has 2 divisors, whose sum is σ = 93797787482. Its totient is φ = 93797787480.

The previous prime is 93797787439. The next prime is 93797787599. The reversal of 93797787481 is 18478779739.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64302816400 + 29494971081 = 253580^2 + 171741^2 .

It is a cyclic number.

It is not a de Polignac number, because 93797787481 - 2⁷ = 93797787353 is a prime.

It is a super-2 number, since 2×93797787481² (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 93797787481.

It is not a weakly prime, because it can be changed into another prime (93797787431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46898893740 + 46898893741.

It is an arithmetic number, because the mean of its divisors is an integer number (46898893741).

Almost surely, 2^93797787481 is an apocalyptic number.

It is an amenable number.

93797787481 is a deficient number, since it is larger than the sum of its proper divisors (1).

93797787481 is an equidigital number, since it uses as much as digits as its factorization.

93797787481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 149361408, while the sum is 70.

The spelling of 93797787481 in words is "ninety-three billion, seven hundred ninety-seven million, seven hundred eighty-seven thousand, four hundred eighty-one".