11206615540 has 24 divisors (see below), whose sum is σ = 23557030560. Its totient is φ = 4478239008.

The previous prime is 11206615523. The next prime is 11206615559. The reversal of 11206615540 is 4551660211.

It is a super-2 number, since 2×11206615540² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254562 + ... + 295321.

It is an arithmetic number, because the mean of its divisors is an integer number (981542940).

Almost surely, 2^11206615540 is an apocalyptic number.

11206615540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11206615540 is an abundant number, since it is smaller than the sum of its proper divisors (12350415020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11206615540 is a wasteful number, since it uses less digits than its factorization.

11206615540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550911 (or 550909 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11206615540 in words is "eleven billion, two hundred six million, six hundred fifteen thousand, five hundred forty".