28953440450819 has 2 divisors, whose sum is σ = 28953440450820. Its totient is φ = 28953440450818.

The previous prime is 28953440450807. The next prime is 28953440450843. The reversal of 28953440450819 is 91805404435982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28953440450819 - 2¹⁶ = 28953440385283 is a prime.

It is a super-2 number, since 2×28953440450819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28953440450119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14476720225409 + 14476720225410.

It is an arithmetic number, because the mean of its divisors is an integer number (14476720225410).

Almost surely, 2^{28953440450819} is an apocalyptic number.

28953440450819 is a deficient number, since it is larger than the sum of its proper divisors (1).

28953440450819 is an equidigital number, since it uses as much as digits as its factorization.

28953440450819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 62.

The spelling of 28953440450819 in words is "twenty-eight trillion, nine hundred fifty-three billion, four hundred forty million, four hundred fifty thousand, eight hundred nineteen".