49775999947 has 4 divisors (see below), whose sum is σ = 50026130800. Its totient is φ = 49525869096.

The previous prime is 49775999921. The next prime is 49775999951. The reversal of 49775999947 is 74999957794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74999957794 = 2 ⋅37499978897.

It is a cyclic number.

It is not a de Polignac number, because 49775999947 - 2¹⁵ = 49775967179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49775999957) 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, 125065128 + ... + 125065525.

It is an arithmetic number, because the mean of its divisors is an integer number (12506532700).

Almost surely, 2^49775999947 is an apocalyptic number.

49775999947 is a deficient number, since it is larger than the sum of its proper divisors (250130853).

49775999947 is a wasteful number, since it uses less digits than its factorization.

49775999947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250130852.

The product of its digits is 1620304560, while the sum is 79.

The spelling of 49775999947 in words is "forty-nine billion, seven hundred seventy-five million, nine hundred ninety-nine thousand, nine hundred forty-seven".