11506427751 has 16 divisors (see below), whose sum is σ = 18882343424. Its totient is φ = 6069324384.

The previous prime is 11506427729. The next prime is 11506427767. The reversal of 11506427751 is 15772460511.

It is not a de Polignac number, because 11506427751 - 2⁵ = 11506427719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506427771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21073771 + ... + 21074316.

It is an arithmetic number, because the mean of its divisors is an integer number (1180146464).

Almost surely, 2^11506427751 is an apocalyptic number.

11506427751 is a deficient number, since it is larger than the sum of its proper divisors (7375915673).

11506427751 is a wasteful number, since it uses less digits than its factorization.

11506427751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42148110.

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 11506427751 in words is "eleven billion, five hundred six million, four hundred twenty-seven thousand, seven hundred fifty-one".