55074121796940 has 144 divisors (see below), whose sum is σ = 158690231965440. Its totient is φ = 14271135680000.

The previous prime is 55074121796921. The next prime is 55074121796951. The reversal of 55074121796940 is 4969712147055.

It is a super-2 number, since 2×55074121796940² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24228121 + ... + 26403599.

It is an arithmetic number, because the mean of its divisors is an integer number (1102015499760).

Almost surely, 2^{55074121796940} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55074121796940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79345115982720).

55074121796940 is an abundant number, since it is smaller than the sum of its proper divisors (103616110168500).

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

55074121796940 is a wasteful number, since it uses less digits than its factorization.

55074121796940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175824 (or 2175781 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 60.

The spelling of 55074121796940 in words is "fifty-five trillion, seventy-four billion, one hundred twenty-one million, seven hundred ninety-six thousand, nine hundred forty".