11423015661 has 16 divisors (see below), whose sum is σ = 16006109504. Its totient is φ = 7237206144.

The previous prime is 11423015633. The next prime is 11423015663. The reversal of 11423015661 is 16651032411.

It is a happy number.

It is not a de Polignac number, because 11423015661 - 2⁵ = 11423015629 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 (11423015663) 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 15 ways as a sum of consecutive naturals, for example, 1191856 + ... + 1201401.

It is an arithmetic number, because the mean of its divisors is an integer number (1000381844).

Almost surely, 2^11423015661 is an apocalyptic number.

It is an amenable number.

11423015661 is a deficient number, since it is larger than the sum of its proper divisors (4583093843).

11423015661 is a wasteful number, since it uses less digits than its factorization.

11423015661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393340.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 11423015661 in words is "eleven billion, four hundred twenty-three million, fifteen thousand, six hundred sixty-one".