55111111650474 has 64 divisors (see below), whose sum is σ = 121961596192128. Its totient is φ = 16461833472000.

The previous prime is 55111111650421. The next prime is 55111111650523. The reversal of 55111111650474 is 47405611111155.

It is a super-2 number, since 2×55111111650474² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4778674 + ... + 11535074.

It is an arithmetic number, because the mean of its divisors is an integer number (1905649940502).

Almost surely, 2^{55111111650474} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55111111650474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60980798096064).

55111111650474 is an abundant number, since it is smaller than the sum of its proper divisors (66850484541654).

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

55111111650474 is a wasteful number, since it uses less digits than its factorization.

55111111650474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758183.

The product of its (nonzero) digits is 84000, while the sum is 42.

The spelling of 55111111650474 in words is "fifty-five trillion, one hundred eleven billion, one hundred eleven million, six hundred fifty thousand, four hundred seventy-four".