11140525540 has 12 divisors (see below), whose sum is σ = 23395103676. Its totient is φ = 4456210208.

The previous prime is 11140525523. The next prime is 11140525541. The reversal of 11140525540 is 4552504111.

It can be written as a sum of positive squares in 2 ways, for example, as 7920644004 + 3219881536 = 88998^2 + 56744^2 .

It is a super-2 number, since 2×11140525540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11140525499 and 11140525508.

It is not an unprimeable number, because it can be changed into a prime (11140525541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278513119 + ... + 278513158.

It is an arithmetic number, because the mean of its divisors is an integer number (1949591973).

Almost surely, 2^11140525540 is an apocalyptic number.

11140525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11140525540 is an abundant number, since it is smaller than the sum of its proper divisors (12254578136).

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

11140525540 is a wasteful number, since it uses less digits than its factorization.

11140525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557026286 (or 557026284 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 11140525540 in words is "eleven billion, one hundred forty million, five hundred twenty-five thousand, five hundred forty".