49138704228 has 12 divisors (see below), whose sum is σ = 114656976560. Its totient is φ = 16379568072.

The previous prime is 49138704217. The next prime is 49138704313. The reversal of 49138704228 is 82240783194.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×49138704228² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2047445998 + ... + 2047446021.

Almost surely, 2^49138704228 is an apocalyptic number.

It is an amenable number.

49138704228 is an abundant number, since it is smaller than the sum of its proper divisors (65518272332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49138704228 is a wasteful number, since it uses less digits than its factorization.

49138704228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094892026 (or 4094892024 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 49138704228 in words is "forty-nine billion, one hundred thirty-eight million, seven hundred four thousand, two hundred twenty-eight".