55908016920 has 384 divisors, whose sum is σ = 213257341440. Its totient is φ = 12436623360.

The previous prime is 55908016919. The next prime is 55908016939. The reversal of 55908016920 is 2961080955.

55908016920 is a `hidden beast` number, since 559 + 0 + 8 + 0 + 1 + 6 + 92 + 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 95 ways as a sum of consecutive naturals, for example, 36516555 + ... + 36518085.

It is an arithmetic number, because the mean of its divisors is an integer number (555357660).

Almost surely, 2^55908016920 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 55908016920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106628670720).

55908016920 is an abundant number, since it is smaller than the sum of its proper divisors (157349324520).

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

55908016920 is a wasteful number, since it uses less digits than its factorization.

55908016920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 55908016920 in words is "fifty-five billion, nine hundred eight million, sixteen thousand, nine hundred twenty".