47919165840 has 1800 divisors, whose sum is σ = 225369682560. Its totient is φ = 9374496768.

The previous prime is 47919165739. The next prime is 47919165851. The reversal of 47919165840 is 4856191974.

47919165840 is a `hidden beast` number, since 47 + 9 + 1 + 9 + 16 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 1019556697 + ... + 1019556743.

Almost surely, 2^47919165840 is an apocalyptic number.

47919165840 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 47919165840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112684841280).

47919165840 is an abundant number, since it is smaller than the sum of its proper divisors (177450516720).

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

47919165840 is a wasteful number, since it uses less digits than its factorization.

47919165840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 47919165840 in words is "forty-seven billion, nine hundred nineteen million, one hundred sixty-five thousand, eight hundred forty".