11151561551 has 8 divisors (see below), whose sum is σ = 12088908384. Its totient is φ = 10225576800.

The previous prime is 11151561527. The next prime is 11151561557. The reversal of 11151561551 is 15516515111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11151561551 - 2³⁰ = 10077819727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151561557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2838476 + ... + 2842401.

It is an arithmetic number, because the mean of its divisors is an integer number (1511113548).

Almost surely, 2^11151561551 is an apocalyptic number.

11151561551 is a deficient number, since it is larger than the sum of its proper divisors (937346833).

11151561551 is a wasteful number, since it uses less digits than its factorization.

11151561551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681041.

The product of its digits is 3750, while the sum is 32.

The spelling of 11151561551 in words is "eleven billion, one hundred fifty-one million, five hundred sixty-one thousand, five hundred fifty-one".