2520128471 has 4 divisors (see below), whose sum is σ = 2880146832. Its totient is φ = 2160110112.

The previous prime is 2520128461. The next prime is 2520128473. The reversal of 2520128471 is 1748210252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2520128471 - 2²² = 2515934167 is a prime.

It is a super-3 number, since 3×2520128471³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520128473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180009170 + ... + 180009183.

It is an arithmetic number, because the mean of its divisors is an integer number (720036708).

Almost surely, 2^2520128471 is an apocalyptic number.

2520128471 is a deficient number, since it is larger than the sum of its proper divisors (360018361).

2520128471 is an equidigital number, since it uses as much as digits as its factorization.

2520128471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360018360.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2520128471 is about 50200.8811775252. The cubic root of 2520128471 is about 1360.8415478908.

The spelling of 2520128471 in words is "two billion, five hundred twenty million, one hundred twenty-eight thousand, four hundred seventy-one".