520969903990 has 32 divisors (see below), whose sum is σ = 1011641464800. Its totient is φ = 192429279744.

The previous prime is 520969903981. The next prime is 520969903997. The reversal of 520969903990 is 99309969025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520969903997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28901640 + ... + 28919659.

It is an arithmetic number, because the mean of its divisors is an integer number (31613795775).

Almost surely, 2^520969903990 is an apocalyptic number.

520969903990 is a deficient number, since it is larger than the sum of its proper divisors (490671560810).

520969903990 is a wasteful number, since it uses less digits than its factorization.

520969903990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57821376.

The product of its (nonzero) digits is 10628820, while the sum is 61.

The spelling of 520969903990 in words is "five hundred twenty billion, nine hundred sixty-nine million, nine hundred three thousand, nine hundred ninety".