55411781712 has 80 divisors (see below), whose sum is σ = 166935446400. Its totient is φ = 15831932928.

The previous prime is 55411781687. The next prime is 55411781717. The reversal of 55411781712 is 21718711455.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55411781717) 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, 1666353 + ... + 1699280.

It is an arithmetic number, because the mean of its divisors is an integer number (2086693080).

Almost surely, 2^55411781712 is an apocalyptic number.

It is an amenable number.

55411781712 is an abundant number, since it is smaller than the sum of its proper divisors (111523664688).

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

55411781712 is a wasteful number, since it uses less digits than its factorization.

55411781712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365665 (or 3365645 counting only the distinct ones).

The product of its digits is 78400, while the sum is 42.

The spelling of 55411781712 in words is "fifty-five billion, four hundred eleven million, seven hundred eighty-one thousand, seven hundred twelve".