49123371990 has 64 divisors (see below), whose sum is σ = 146987343360. Its totient is φ = 10207453440.

The previous prime is 49123371959. The next prime is 49123372013. The reversal of 49123371990 is 9917332194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10630455 + ... + 10635074.

It is an arithmetic number, because the mean of its divisors is an integer number (2296677240).

Almost surely, 2^49123371990 is an apocalyptic number.

49123371990 is an abundant number, since it is smaller than the sum of its proper divisors (97863971370).

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

49123371990 is a wasteful number, since it uses less digits than its factorization.

49123371990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21265557.

The product of its (nonzero) digits is 367416, while the sum is 48.

The spelling of 49123371990 in words is "forty-nine billion, one hundred twenty-three million, three hundred seventy-one thousand, nine hundred ninety".