49406620185 has 36 divisors (see below), whose sum is σ = 92732439852. Its totient is φ = 24323255424.

The previous prime is 49406620169. The next prime is 49406620187. The reversal of 49406620185 is 58102660494.

49406620185 is a `hidden beast` number, since 4 + 9 + 4 + 0 + 6 + 620 + 18 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 24497258256 + 24909361929 = 156516^2 + 157827^2 .

It is not a de Polignac number, because 49406620185 - 2⁴ = 49406620169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 49406620185.

It is not an unprimeable number, because it can be changed into a prime (49406620187) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3240694 + ... + 3255903.

It is an arithmetic number, because the mean of its divisors is an integer number (2575901107).

Almost surely, 2^49406620185 is an apocalyptic number.

49406620185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49406620185 is a deficient number, since it is larger than the sum of its proper divisors (43325819667).

49406620185 is a wasteful number, since it uses less digits than its factorization.

49406620185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496634 (or 6496618 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 49406620185 in words is "forty-nine billion, four hundred six million, six hundred twenty thousand, one hundred eighty-five".