11988905001 has 16 divisors (see below), whose sum is σ = 16529829888. Its totient is φ = 7721197200.

The previous prime is 11988904999. The next prime is 11988905003. The reversal of 11988905001 is 10050988911.

It is an interprime number because it is at equal distance from previous prime (11988904999) and next prime (11988905003).

It is not a de Polignac number, because 11988905001 - 2¹ = 11988904999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11988905003) 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, 59781 + ... + 165986.

It is an arithmetic number, because the mean of its divisors is an integer number (1033114368).

Almost surely, 2^11988905001 is an apocalyptic number.

It is an amenable number.

11988905001 is a deficient number, since it is larger than the sum of its proper divisors (4540924887).

11988905001 is a wasteful number, since it uses less digits than its factorization.

11988905001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226372.

The product of its (nonzero) digits is 25920, while the sum is 42.

The spelling of 11988905001 in words is "eleven billion, nine hundred eighty-eight million, nine hundred five thousand, one".