47158439808 has 32 divisors (see below), whose sum is σ = 125264606760. Its totient is φ = 15719479808.

The previous prime is 47158439803. The next prime is 47158439863. The reversal of 47158439808 is 80893485174.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47158439803) 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, 61403835 + ... + 61404602.

Almost surely, 2^47158439808 is an apocalyptic number.

47158439808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47158439808 is an abundant number, since it is smaller than the sum of its proper divisors (78106166952).

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

47158439808 is a wasteful number, since it uses less digits than its factorization.

47158439808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122808454 (or 122808442 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 47158439808 in words is "forty-seven billion, one hundred fifty-eight million, four hundred thirty-nine thousand, eight hundred eight".