47005451640 has 192 divisors, whose sum is σ = 174705485760. Its totient is φ = 10737100800.

The previous prime is 47005451629. The next prime is 47005451653. The reversal of 47005451640 is 4615450074.

47005451640 is a `hidden beast` number, since 4 + 7 + 0 + 0 + 5 + 4 + 5 + 1 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47005451595 and 47005451604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4533342 + ... + 4543698.

It is an arithmetic number, because the mean of its divisors is an integer number (909924405).

Almost surely, 2^47005451640 is an apocalyptic number.

47005451640 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 47005451640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87352742880).

47005451640 is an abundant number, since it is smaller than the sum of its proper divisors (127700034120).

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

47005451640 is a wasteful number, since it uses less digits than its factorization.

47005451640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12182 (or 12175 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 47005451640 in words is "forty-seven billion, five million, four hundred fifty-one thousand, six hundred forty".