77283022381 has 2 divisors, whose sum is σ = 77283022382. Its totient is φ = 77283022380.

The previous prime is 77283022337. The next prime is 77283022387. The reversal of 77283022381 is 18322038277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55747459881 + 21535562500 = 236109^2 + 146750^2 .

It is a cyclic number.

It is not a de Polignac number, because 77283022381 - 2¹⁹ = 77282498093 is a prime.

It is a super-2 number, since 2×77283022381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77283022387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38641511190 + 38641511191.

It is an arithmetic number, because the mean of its divisors is an integer number (38641511191).

Almost surely, 2^77283022381 is an apocalyptic number.

It is an amenable number.

77283022381 is a deficient number, since it is larger than the sum of its proper divisors (1).

77283022381 is an equidigital number, since it uses as much as digits as its factorization.

77283022381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 77283022381 in words is "seventy-seven billion, two hundred eighty-three million, twenty-two thousand, three hundred eighty-one".