7266511213551 has 24 divisors (see below), whose sum is σ = 10540375223040. Its totient is φ = 4823894544336.

The previous prime is 7266511213541. The next prime is 7266511213567. The reversal of 7266511213551 is 1553121156627.

7266511213551 is a `hidden beast` number, since 7 + 2 + 6 + 65 + 11 + 21 + 3 + 551 = 666.

It is not a de Polignac number, because 7266511213551 - 2¹⁴ = 7266511197167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7266511213497 and 7266511213506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7266511213501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86916696 + ... + 87000258.

It is an arithmetic number, because the mean of its divisors is an integer number (439182300960).

Almost surely, 2^{7266511213551} is an apocalyptic number.

7266511213551 is a deficient number, since it is larger than the sum of its proper divisors (3273864009489).

7266511213551 is a wasteful number, since it uses less digits than its factorization.

7266511213551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124235 (or 124232 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 7266511213551 in words is "seven trillion, two hundred sixty-six billion, five hundred eleven million, two hundred thirteen thousand, five hundred fifty-one".