55781889762 has 8 divisors (see below), whose sum is σ = 111563779536. Its totient is φ = 18593963252.

The previous prime is 55781889739. The next prime is 55781889827. The reversal of 55781889762 is 26798818755.

It is a sphenic number, since it is the product of 3 distinct primes.

55781889762 is an admirable number.

It is a super-2 number, since 2×55781889762² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55781889693 and 55781889702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4648490808 + ... + 4648490819.

It is an arithmetic number, because the mean of its divisors is an integer number (13945472442).

Almost surely, 2^55781889762 is an apocalyptic number.

55781889762 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55781889762 is a wasteful number, since it uses less digits than its factorization.

55781889762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9296981632.

The product of its digits is 67737600, while the sum is 66.

The spelling of 55781889762 in words is "fifty-five billion, seven hundred eighty-one million, eight hundred eighty-nine thousand, seven hundred sixty-two".