1135215542551 has 4 divisors (see below), whose sum is σ = 1138210834600. Its totient is φ = 1132220250504.

The previous prime is 1135215542533. The next prime is 1135215542557. The reversal of 1135215542551 is 1552455125311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1135215542551 - 2²⁵ = 1135181988119 is a prime.

It is a super-2 number, since 2×1135215542551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135215542557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497645456 + ... + 1497646213.

It is an arithmetic number, because the mean of its divisors is an integer number (284552708650).

Almost surely, 2^{1135215542551} is an apocalyptic number.

1135215542551 is a deficient number, since it is larger than the sum of its proper divisors (2995292049).

1135215542551 is an equidigital number, since it uses as much as digits as its factorization.

1135215542551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995292048.

The product of its digits is 150000, while the sum is 40.

The spelling of 1135215542551 in words is "one trillion, one hundred thirty-five billion, two hundred fifteen million, five hundred forty-two thousand, five hundred fifty-one".