11240426640 has 80 divisors (see below), whose sum is σ = 34857376128. Its totient is φ = 2996410368.

The previous prime is 11240426633. The next prime is 11240426671. The reversal of 11240426640 is 4662404211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11240426598 and 11240426607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897864 + ... + 910296.

Almost surely, 2^11240426640 is an apocalyptic number.

11240426640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11240426640 is an abundant number, since it is smaller than the sum of its proper divisors (23616949488).

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

11240426640 is a wasteful number, since it uses less digits than its factorization.

11240426640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16216 (or 16210 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 11240426640 in words is "eleven billion, two hundred forty million, four hundred twenty-six thousand, six hundred forty".