5217047640 has 144 divisors (see below), whose sum is σ = 19723700880. Its totient is φ = 1192464000.

The previous prime is 5217047609. The next prime is 5217047651. The reversal of 5217047640 is 467407125.

5217047640 is a `hidden beast` number, since 5 + 2 + 1 + 7 + 0 + 4 + 7 + 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 = 5217047595 and 5217047604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 130236 + ... + 165515.

It is an arithmetic number, because the mean of its divisors is an integer number (136970145).

Almost surely, 2^5217047640 is an apocalyptic number.

It is an amenable number.

5217047640 is an abundant number, since it is smaller than the sum of its proper divisors (14506653240).

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

5217047640 is a wasteful number, since it uses less digits than its factorization.

5217047640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295782 (or 295768 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 5217047640 is about 72229.1329035591. The cubic root of 5217047640 is about 1734.3693932519.

The spelling of 5217047640 in words is "five billion, two hundred seventeen million, forty-seven thousand, six hundred forty".