111613771640 has 64 divisors (see below), whose sum is σ = 299485416960. Its totient is φ = 36603768960.

The previous prime is 111613771639. The next prime is 111613771649. The reversal of 111613771640 is 46177316111.

It is a junction number, because it is equal to n+sod(n) for n = 111613771594 and 111613771603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111613771649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8659226 + ... + 8672105.

It is an arithmetic number, because the mean of its divisors is an integer number (4679459640).

Almost surely, 2^111613771640 is an apocalyptic number.

111613771640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111613771640 is an abundant number, since it is smaller than the sum of its proper divisors (187871645320).

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

111613771640 is a wasteful number, since it uses less digits than its factorization.

111613771640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331372 (or 17331368 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 111613771640 in words is "one hundred eleven billion, six hundred thirteen million, seven hundred seventy-one thousand, six hundred forty".