55373328671872 has 64 divisors (see below), whose sum is σ = 111914564146560. Its totient is φ = 27285293701120.

The previous prime is 55373328671831. The next prime is 55373328671917. The reversal of 55373328671872 is 27817682337355.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×55373328671872² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55373328671798 and 55373328671807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20474493 + ... + 23020675.

It is an arithmetic number, because the mean of its divisors is an integer number (1748665064790).

Almost surely, 2^{55373328671872} 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 55373328671872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55957282073280).

55373328671872 is an abundant number, since it is smaller than the sum of its proper divisors (56541235474688).

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

55373328671872 is a wasteful number, since it uses less digits than its factorization.

55373328671872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548661 (or 2548649 counting only the distinct ones).

The product of its digits is 355622400, while the sum is 67.

The spelling of 55373328671872 in words is "fifty-five trillion, three hundred seventy-three billion, three hundred twenty-eight million, six hundred seventy-one thousand, eight hundred seventy-two".