50136642518 has 32 divisors (see below), whose sum is σ = 80006292000. Its totient is φ = 23526173440.

The previous prime is 50136642497. The next prime is 50136642557. The reversal of 50136642518 is 81524663105.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 222248 + ... + 386868.

It is an arithmetic number, because the mean of its divisors is an integer number (2500196625).

Almost surely, 2^50136642518 is an apocalyptic number.

50136642518 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

50136642518 is a deficient number, since it is larger than the sum of its proper divisors (29869649482).

50136642518 is a wasteful number, since it uses less digits than its factorization.

50136642518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164800.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 50136642518 in words is "fifty billion, one hundred thirty-six million, six hundred forty-two thousand, five hundred eighteen".