5209978620 has 96 divisors (see below), whose sum is σ = 18187577856. Its totient is φ = 1082592000.

The previous prime is 5209978601. The next prime is 5209978643. The reversal of 5209978620 is 268799025.

It is a self number, because there is not a number n which added to its sum of digits gives 5209978620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559231 + ... + 568470.

It is an arithmetic number, because the mean of its divisors is an integer number (189453936).

Almost surely, 2^5209978620 is an apocalyptic number.

It is an amenable number.

5209978620 is an abundant number, since it is smaller than the sum of its proper divisors (12977599236).

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

5209978620 is a wasteful number, since it uses less digits than its factorization.

5209978620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127731 (or 1127729 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 5209978620 is about 72180.1816290317. The cubic root of 5209978620 is about 1733.5856911500.

The spelling of 5209978620 in words is "five billion, two hundred nine million, nine hundred seventy-eight thousand, six hundred twenty".