11101999977 has 6 divisors (see below), whose sum is σ = 16036222202. Its totient is φ = 7401333312.

The previous prime is 11101999859. The next prime is 11101999981. The reversal of 11101999977 is 77999910111.

It can be written as a sum of positive squares in only one way, i.e., 8103780441 + 2998219536 = 90021^2 + 54756^2 .

It is not a de Polignac number, because 11101999977 - 2¹⁰ = 11101998953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101999177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616777768 + ... + 616777785.

Almost surely, 2^11101999977 is an apocalyptic number.

It is an amenable number.

11101999977 is a deficient number, since it is larger than the sum of its proper divisors (4934222225).

11101999977 is a wasteful number, since it uses less digits than its factorization.

11101999977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233555559 (or 1233555556 counting only the distinct ones).

The product of its (nonzero) digits is 321489, while the sum is 54.

The spelling of 11101999977 in words is "eleven billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred seventy-seven".