11261635870 has 32 divisors (see below), whose sum is σ = 20420136000. Its totient is φ = 4471545600.

The previous prime is 11261635823. The next prime is 11261635921. The reversal of 11261635870 is 7853616211.

It is a happy number.

It is a congruent number.

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, 4095256 + ... + 4098004.

It is an arithmetic number, because the mean of its divisors is an integer number (638129250).

Almost surely, 2^11261635870 is an apocalyptic number.

11261635870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11261635870 is a deficient number, since it is larger than the sum of its proper divisors (9158500130).

11261635870 is a wasteful number, since it uses less digits than its factorization.

11261635870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 11261635870 in words is "eleven billion, two hundred sixty-one million, six hundred thirty-five thousand, eight hundred seventy".