47169008640 has 660 divisors, whose sum is σ = 183301259724. Its totient is φ = 11593580544.

The previous prime is 47169008633. The next prime is 47169008641. The reversal of 47169008640 is 4680096174.

47169008640 is a `hidden beast` number, since 471 + 69 + 0 + 0 + 86 + 40 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 12875894784 + 34293113856 = 113472^2 + 185184^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47169008641) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 70087344 + ... + 70088016.

Almost surely, 2^47169008640 is an apocalyptic number.

47169008640 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 47169008640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91650629862).

47169008640 is an abundant number, since it is smaller than the sum of its proper divisors (136132251084).

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

47169008640 is a wasteful number, since it uses less digits than its factorization.

47169008640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 47169008640 in words is "forty-seven billion, one hundred sixty-nine million, eight thousand, six hundred forty".