55845678980 has 192 divisors, whose sum is σ = 153057848832. Its totient is φ = 16609812480.

The previous prime is 55845678979. The next prime is 55845679007. The reversal of 55845678980 is 8987654855.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40437890 + ... + 40439270.

It is an arithmetic number, because the mean of its divisors is an integer number (797176296).

Almost surely, 2^55845678980 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 55845678980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76528924416).

55845678980 is an abundant number, since it is smaller than the sum of its proper divisors (97212169852).

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

55845678980 is a wasteful number, since it uses less digits than its factorization.

55845678980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2732 counting only the distinct ones).

The product of its (nonzero) digits is 96768000, while the sum is 65.

The spelling of 55845678980 in words is "fifty-five billion, eight hundred forty-five million, six hundred seventy-eight thousand, nine hundred eighty".