755649040981 has 16 divisors (see below), whose sum is σ = 768618734400. Its totient is φ = 742805417088.

The previous prime is 755649040919. The next prime is 755649040997. The reversal of 755649040981 is 189040946557.

755649040981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 755649040981 - 2²³ = 755640652373 is a prime.

It is a super-2 number, since 2×755649040981² (a number of 25 digits) contains 22 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 (755649040901) 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, 10072050 + ... + 10146796.

It is an arithmetic number, because the mean of its divisors is an integer number (48038670900).

Almost surely, 2^755649040981 is an apocalyptic number.

It is an amenable number.

755649040981 is a deficient number, since it is larger than the sum of its proper divisors (12969693419).

755649040981 is a wasteful number, since it uses less digits than its factorization.

755649040981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75588.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 755649040981 in words is "seven hundred fifty-five billion, six hundred forty-nine million, forty thousand, nine hundred eighty-one".