2551726643511 has 32 divisors (see below), whose sum is σ = 3453753600000. Its totient is φ = 1675615206528.

The previous prime is 2551726643507. The next prime is 2551726643527. The reversal of 2551726643511 is 1153466271552.

It is not a de Polignac number, because 2551726643511 - 2² = 2551726643507 is a prime.

It is a super-2 number, since 2×2551726643511² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551726647511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336502426 + ... + 336510008.

It is an arithmetic number, because the mean of its divisors is an integer number (107929800000).

Almost surely, 2^{2551726643511} is an apocalyptic number.

2551726643511 is a deficient number, since it is larger than the sum of its proper divisors (902026956489).

2551726643511 is a wasteful number, since it uses less digits than its factorization.

2551726643511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13623.

The product of its digits is 1512000, while the sum is 48.

The spelling of 2551726643511 in words is "two trillion, five hundred fifty-one billion, seven hundred twenty-six million, six hundred forty-three thousand, five hundred eleven".