49490515985 has 16 divisors (see below), whose sum is σ = 60076625616. Its totient is φ = 39134773248.

The previous prime is 49490515969. The next prime is 49490516011. The reversal of 49490515985 is 58951509494.

It can be written as a sum of positive squares in 8 ways, for example, as 738317584 + 48752198401 = 27172^2 + 220799^2 .

It is a cyclic number.

It is not a de Polignac number, because 49490515985 - 2⁴ = 49490515969 is a prime.

It is a super-2 number, since 2×49490515985² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322529 + ... + 450561.

It is an arithmetic number, because the mean of its divisors is an integer number (3754789101).

Almost surely, 2^49490515985 is an apocalyptic number.

It is an amenable number.

49490515985 is a deficient number, since it is larger than the sum of its proper divisors (10586109631).

49490515985 is a wasteful number, since it uses less digits than its factorization.

49490515985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128932.

The product of its (nonzero) digits is 11664000, while the sum is 59.

The spelling of 49490515985 in words is "forty-nine billion, four hundred ninety million, five hundred fifteen thousand, nine hundred eighty-five".