20134857550 has 12 divisors (see below), whose sum is σ = 37450835136. Its totient is φ = 8053943000.

The previous prime is 20134857521. The next prime is 20134857563. The reversal of 20134857550 is 5575843102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201348526 + ... + 201348625.

It is an arithmetic number, because the mean of its divisors is an integer number (3120902928).

Almost surely, 2^20134857550 is an apocalyptic number.

20134857550 is a deficient number, since it is larger than the sum of its proper divisors (17315977586).

20134857550 is a wasteful number, since it uses less digits than its factorization.

20134857550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402697163 (or 402697158 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 20134857550 in words is "twenty billion, one hundred thirty-four million, eight hundred fifty-seven thousand, five hundred fifty".