2551540306623 has 16 divisors (see below), whose sum is σ = 4241521549056. Its totient is φ = 1325475483840.

The previous prime is 2551540306621. The next prime is 2551540306723. The reversal of 2551540306623 is 3266030451552.

It is a happy number.

It is not a de Polignac number, because 2551540306623 - 2¹ = 2551540306621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551540306621) 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, 5522814286 + ... + 5522814747.

It is an arithmetic number, because the mean of its divisors is an integer number (265095096816).

Almost surely, 2^{2551540306623} is an apocalyptic number.

2551540306623 is a deficient number, since it is larger than the sum of its proper divisors (1689981242433).

2551540306623 is a wasteful number, since it uses less digits than its factorization.

2551540306623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045629054.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 2551540306623 in words is "two trillion, five hundred fifty-one billion, five hundred forty million, three hundred six thousand, six hundred twenty-three".