755120528421 has 96 divisors (see below), whose sum is σ = 1248559723008. Its totient is φ = 403354828800.

The previous prime is 755120528411. The next prime is 755120528443. The reversal of 755120528421 is 124825021557.

755120528421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 755120528421 - 2⁵ = 755120528389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755120528411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 269588221 + ... + 269591021.

It is an arithmetic number, because the mean of its divisors is an integer number (13005830448).

Almost surely, 2^755120528421 is an apocalyptic number.

It is an amenable number.

755120528421 is a deficient number, since it is larger than the sum of its proper divisors (493439194587).

755120528421 is a wasteful number, since it uses less digits than its factorization.

755120528421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531 (or 3524 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 42.

Adding to 755120528421 its reverse (124825021557), we get a palindrome (879945549978).

The spelling of 755120528421 in words is "seven hundred fifty-five billion, one hundred twenty million, five hundred twenty-eight thousand, four hundred twenty-one".