11011651951 has 12 divisors (see below), whose sum is σ = 11659203504. Its totient is φ = 10398441600.

The previous prime is 11011651933. The next prime is 11011651979. The reversal of 11011651951 is 15915611011.

11011651951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11011651951 - 2²⁹ = 10474781039 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 (21011651951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63231 + ... + 161311.

It is an arithmetic number, because the mean of its divisors is an integer number (971600292).

Almost surely, 2^11011651951 is an apocalyptic number.

11011651951 is a deficient number, since it is larger than the sum of its proper divisors (647551553).

11011651951 is an equidigital number, since it uses as much as digits as its factorization.

11011651951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98430 (or 98411 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 31.

The spelling of 11011651951 in words is "eleven billion, eleven million, six hundred fifty-one thousand, nine hundred fifty-one".