61853840111 has 48 divisors (see below), whose sum is σ = 80310585600. Its totient is φ = 46375939584.

The previous prime is 61853840099. The next prime is 61853840117. The reversal of 61853840111 is 11104835816.

It is not a de Polignac number, because 61853840111 - 2²² = 61849645807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61853840117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6346280 + ... + 6356018.

It is an arithmetic number, because the mean of its divisors is an integer number (1673137200).

Almost surely, 2^61853840111 is an apocalyptic number.

61853840111 is a deficient number, since it is larger than the sum of its proper divisors (18456745489).

61853840111 is a wasteful number, since it uses less digits than its factorization.

61853840111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888 (or 9835 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 61853840111 in words is "sixty-one billion, eight hundred fifty-three million, eight hundred forty thousand, one hundred eleven".