754653563121 has 4 divisors (see below), whose sum is σ = 1006204750832. Its totient is φ = 503102375412.

The previous prime is 754653563119. The next prime is 754653563179. The reversal of 754653563121 is 121365356457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 754653563121 - 2¹ = 754653563119 is a prime.

It is a super-2 number, since 2×754653563121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (754653563621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125775593851 + ... + 125775593856.

It is an arithmetic number, because the mean of its divisors is an integer number (251551187708).

Almost surely, 2^754653563121 is an apocalyptic number.

It is an amenable number.

754653563121 is a deficient number, since it is larger than the sum of its proper divisors (251551187711).

754653563121 is a wasteful number, since it uses less digits than its factorization.

754653563121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251551187710.

The product of its digits is 2268000, while the sum is 48.

The spelling of 754653563121 in words is "seven hundred fifty-four billion, six hundred fifty-three million, five hundred sixty-three thousand, one hundred twenty-one".