47936451840 has 144 divisors (see below), whose sum is σ = 154200177600. Its totient is φ = 12690948096.

The previous prime is 47936451833. The next prime is 47936451881. The reversal of 47936451840 is 4815463974.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488856 + ... + 578664.

Almost surely, 2^47936451840 is an apocalyptic number.

47936451840 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 47936451840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77100088800).

47936451840 is an abundant number, since it is smaller than the sum of its proper divisors (106263725760).

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

47936451840 is a wasteful number, since it uses less digits than its factorization.

47936451840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89972 (or 89958 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 47936451840 in words is "forty-seven billion, nine hundred thirty-six million, four hundred fifty-one thousand, eight hundred forty".