11214520551 has 20 divisors (see below), whose sum is σ = 18041215192. Its totient is φ = 6901242768.

The previous prime is 11214520547. The next prime is 11214520553. The reversal of 11214520551 is 15502541211.

It is a happy number.

It is not a de Polignac number, because 11214520551 - 2² = 11214520547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11214520553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5323981 + ... + 5326086.

Almost surely, 2^11214520551 is an apocalyptic number.

11214520551 is a deficient number, since it is larger than the sum of its proper divisors (6826694641).

11214520551 is a wasteful number, since it uses less digits than its factorization.

11214520551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650092 (or 10650083 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 11214520551 in words is "eleven billion, two hundred fourteen million, five hundred twenty thousand, five hundred fifty-one".