4169561520 has 80 divisors (see below), whose sum is σ = 12941671680. Its totient is φ = 1110504192.

The previous prime is 4169561483. The next prime is 4169561531. The reversal of 4169561520 is 251659614.

4169561520 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191007 + ... + 211713.

It is an arithmetic number, because the mean of its divisors is an integer number (161770896).

Almost surely, 2^4169561520 is an apocalyptic number.

4169561520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4169561520 is an abundant number, since it is smaller than the sum of its proper divisors (8772110160).

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

4169561520 is a wasteful number, since it uses less digits than its factorization.

4169561520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562 (or 21556 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 4169561520 is about 64572.1419808883. The cubic root of 4169561520 is about 1609.5215480941.

The spelling of 4169561520 in words is "four billion, one hundred sixty-nine million, five hundred sixty-one thousand, five hundred twenty".