55402801440 has 576 divisors, whose sum is σ = 216834008832. Its totient is φ = 11607736320.

The previous prime is 55402801427. The next prime is 55402801453. The reversal of 55402801440 is 4410820455.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55402801427) and next prime (55402801453).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96018432 + ... + 96019008.

It is an arithmetic number, because the mean of its divisors is an integer number (376447932).

Almost surely, 2^55402801440 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 55402801440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108417004416).

55402801440 is an abundant number, since it is smaller than the sum of its proper divisors (161431207392).

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

55402801440 is a wasteful number, since it uses less digits than its factorization.

55402801440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The spelling of 55402801440 in words is "fifty-five billion, four hundred two million, eight hundred one thousand, four hundred forty".