849407761457 has 8 divisors (see below), whose sum is σ = 850978608480. Its totient is φ = 847837206720.

The previous prime is 849407761381. The next prime is 849407761469. The reversal of 849407761457 is 754167704948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 849407761457 - 2¹² = 849407757361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 849407761457.

It is not an unprimeable number, because it can be changed into a prime (849407761357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6247433 + ... + 6381945.

It is an arithmetic number, because the mean of its divisors is an integer number (106372326060).

Almost surely, 2^849407761457 is an apocalyptic number.

It is an amenable number.

849407761457 is a deficient number, since it is larger than the sum of its proper divisors (1570847023).

849407761457 is a wasteful number, since it uses less digits than its factorization.

849407761457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146143.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 849407761457 in words is "eight hundred forty-nine billion, four hundred seven million, seven hundred sixty-one thousand, four hundred fifty-seven".