11131550001 has 72 divisors (see below), whose sum is σ = 19357054080. Its totient is φ = 6121431360.

The previous prime is 11131549993. The next prime is 11131550039. The reversal of 11131550001 is 10005513111.

11131550001 is a `hidden beast` number, since 1 + 113 + 1 + 550 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 11131550001 - 2³ = 11131549993 is a prime.

It is a super-2 number, since 2×11131550001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11131550701) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 828600 + ... + 841926.

Almost surely, 2^11131550001 is an apocalyptic number.

11131550001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11131550001 is a deficient number, since it is larger than the sum of its proper divisors (8225504079).

11131550001 is a wasteful number, since it uses less digits than its factorization.

11131550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13427 (or 13413 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

The spelling of 11131550001 in words is "eleven billion, one hundred thirty-one million, five hundred fifty thousand, one".