849626919457 has 4 divisors (see below), whose sum is σ = 849760493956. Its totient is φ = 849493344960.

The previous prime is 849626919451. The next prime is 849626919487. The reversal of 849626919457 is 754919626948.

It is a happy number.

849626919457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 360097206561 + 489529712896 = 600081^2 + 699664^2 .

It is a cyclic number.

It is not a de Polignac number, because 849626919457 - 2⁷ = 849626919329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849626919451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66777708 + ... + 66790429.

It is an arithmetic number, because the mean of its divisors is an integer number (212440123489).

Almost surely, 2^849626919457 is an apocalyptic number.

It is an amenable number.

849626919457 is a deficient number, since it is larger than the sum of its proper divisors (133574499).

849626919457 is a wasteful number, since it uses less digits than its factorization.

849626919457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133574498.

The product of its digits is 235146240, while the sum is 70.

The spelling of 849626919457 in words is "eight hundred forty-nine billion, six hundred twenty-six million, nine hundred nineteen thousand, four hundred fifty-seven".