49399858479840 has 384 divisors, whose sum is σ = 173513104128000. Its totient is φ = 11711090688000.

The previous prime is 49399858479833. The next prime is 49399858479913. The reversal of 49399858479840 is 4897485899394.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 297957286 + ... + 298123034.

It is an arithmetic number, because the mean of its divisors is an integer number (451857042000).

Almost surely, 2^{49399858479840} is an apocalyptic number.

49399858479840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49399858479840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86756552064000).

49399858479840 is an abundant number, since it is smaller than the sum of its proper divisors (124113245648160).

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

49399858479840 is a wasteful number, since it uses less digits than its factorization.

49399858479840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167026 (or 167018 counting only the distinct ones).

The product of its (nonzero) digits is 22574039040, while the sum is 87.

The spelling of 49399858479840 in words is "forty-nine trillion, three hundred ninety-nine billion, eight hundred fifty-eight million, four hundred seventy-nine thousand, eight hundred forty".