11071603640 has 32 divisors (see below), whose sum is σ = 24966630000. Its totient is φ = 4418770944.

The previous prime is 11071603637. The next prime is 11071603643. The reversal of 11071603640 is 4630617011.

It is an interprime number because it is at equal distance from previous prime (11071603637) and next prime (11071603643).

It is a super-2 number, since 2×11071603640² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11071603643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290270 + ... + 326189.

Almost surely, 2^11071603640 is an apocalyptic number.

11071603640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11071603640 is an abundant number, since it is smaller than the sum of its proper divisors (13895026360).

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

11071603640 is a wasteful number, since it uses less digits than its factorization.

11071603640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616919 (or 616915 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 11071603640 in words is "eleven billion, seventy-one million, six hundred three thousand, six hundred forty".