49878290920 has 16 divisors (see below), whose sum is σ = 112226154660. Its totient is φ = 19951316352.

The previous prime is 49878290851. The next prime is 49878290923. The reversal of 49878290920 is 2909287894.

It can be written as a sum of positive squares in 2 ways, for example, as 48716435524 + 1161855396 = 220718^2 + 34086^2 .

It is not an unprimeable number, because it can be changed into a prime (49878290923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623478597 + ... + 623478676.

Almost surely, 2^49878290920 is an apocalyptic number.

49878290920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49878290920 is an abundant number, since it is smaller than the sum of its proper divisors (62347863740).

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

49878290920 is a wasteful number, since it uses less digits than its factorization.

49878290920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246957284 (or 1246957280 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 49878290920 in words is "forty-nine billion, eight hundred seventy-eight million, two hundred ninety thousand, nine hundred twenty".