2551213309523 has 8 divisors (see below), whose sum is σ = 2647155651456. Its totient is φ = 2456123788800.

The previous prime is 2551213309517. The next prime is 2551213309583. The reversal of 2551213309523 is 3259033121552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551213309523 - 2⁴ = 2551213309507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551213309583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213199208 + ... + 213211173.

It is an arithmetic number, because the mean of its divisors is an integer number (330894456432).

Almost surely, 2^{2551213309523} is an apocalyptic number.

2551213309523 is a deficient number, since it is larger than the sum of its proper divisors (95942341933).

2551213309523 is a wasteful number, since it uses less digits than its factorization.

2551213309523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426410605.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 2551213309523 in words is "two trillion, five hundred fifty-one billion, two hundred thirteen million, three hundred nine thousand, five hundred twenty-three".