49242778618 has 16 divisors (see below), whose sum is σ = 82293542784. Its totient is φ = 21906844960.

The previous prime is 49242778601. The next prime is 49242778631. The reversal of 49242778618 is 81687724294.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23810755 + ... + 23812822.

It is an arithmetic number, because the mean of its divisors is an integer number (5143346424).

Almost surely, 2^49242778618 is an apocalyptic number.

49242778618 is a deficient number, since it is larger than the sum of its proper divisors (33050764166).

49242778618 is a wasteful number, since it uses less digits than its factorization.

49242778618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47623637.

The product of its digits is 10838016, while the sum is 58.

The spelling of 49242778618 in words is "forty-nine billion, two hundred forty-two million, seven hundred seventy-eight thousand, six hundred eighteen".