77533574423 has 2 divisors, whose sum is σ = 77533574424. Its totient is φ = 77533574422.

The previous prime is 77533574401. The next prime is 77533574527. The reversal of 77533574423 is 32447533577.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77533574423 - 2¹⁸ = 77533312279 is a prime.

It is a super-2 number, since 2×77533574423² (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 (77533574123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38766787211 + 38766787212.

It is an arithmetic number, because the mean of its divisors is an integer number (38766787212).

Almost surely, 2^77533574423 is an apocalyptic number.

77533574423 is a deficient number, since it is larger than the sum of its proper divisors (1).

77533574423 is an equidigital number, since it uses as much as digits as its factorization.

77533574423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 50.

The spelling of 77533574423 in words is "seventy-seven billion, five hundred thirty-three million, five hundred seventy-four thousand, four hundred twenty-three".