233978564429 has 2 divisors, whose sum is σ = 233978564430. Its totient is φ = 233978564428.

The previous prime is 233978564389. The next prime is 233978564447. The reversal of 233978564429 is 924465879332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175221774025 + 58756790404 = 418595^2 + 242398^2 .

It is a cyclic number.

It is not a de Polignac number, because 233978564429 - 2³² = 229683597133 is a prime.

It is a super-2 number, since 2×233978564429² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233978564489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116989282214 + 116989282215.

It is an arithmetic number, because the mean of its divisors is an integer number (116989282215).

Almost surely, 2^233978564429 is an apocalyptic number.

It is an amenable number.

233978564429 is a deficient number, since it is larger than the sum of its proper divisors (1).

233978564429 is an equidigital number, since it uses as much as digits as its factorization.

233978564429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 62.

The spelling of 233978564429 in words is "two hundred thirty-three billion, nine hundred seventy-eight million, five hundred sixty-four thousand, four hundred twenty-nine".