55275423840 has 1152 divisors, whose sum is σ = 255194634240. Its totient is φ = 10964533248.

The previous prime is 55275423821. The next prime is 55275423883. The reversal of 55275423840 is 4832457255.

55275423840 is a `hidden beast` number, since 5 + 5 + 27 + 542 + 3 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 60146901 + ... + 60147819.

It is an arithmetic number, because the mean of its divisors is an integer number (221523120).

Almost surely, 2^55275423840 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 55275423840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127597317120).

55275423840 is an abundant number, since it is smaller than the sum of its proper divisors (199919210400).

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

55275423840 is a wasteful number, since it uses less digits than its factorization.

55275423840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 45.

The spelling of 55275423840 in words is "fifty-five billion, two hundred seventy-five million, four hundred twenty-three thousand, eight hundred forty".