199077705451 has 2 divisors, whose sum is σ = 199077705452. Its totient is φ = 199077705450.

The previous prime is 199077705443. The next prime is 199077705461. The reversal of 199077705451 is 154507770991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199077705451 - 2³ = 199077705443 is a prime.

It is a super-2 number, since 2×199077705451² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199077705392 and 199077705401.

It is not a weakly prime, because it can be changed into another prime (199077705461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99538852725 + 99538852726.

It is an arithmetic number, because the mean of its divisors is an integer number (99538852726).

Almost surely, 2^199077705451 is an apocalyptic number.

199077705451 is a deficient number, since it is larger than the sum of its proper divisors (1).

199077705451 is an equidigital number, since it uses as much as digits as its factorization.

199077705451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2778300, while the sum is 55.

The spelling of 199077705451 in words is "one hundred ninety-nine billion, seventy-seven million, seven hundred five thousand, four hundred fifty-one".