55951427940 has 144 divisors (see below), whose sum is σ = 165197950848. Its totient is φ = 14121755648.

The previous prime is 55951427929. The next prime is 55951427993. The reversal of 55951427940 is 4972415955.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93407761 + ... + 93408359.

It is an arithmetic number, because the mean of its divisors is an integer number (1147207992).

Almost surely, 2^55951427940 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 55951427940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82598975424).

55951427940 is an abundant number, since it is smaller than the sum of its proper divisors (109246522908).

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

55951427940 is a wasteful number, since it uses less digits than its factorization.

55951427940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 55951427940 in words is "fifty-five billion, nine hundred fifty-one million, four hundred twenty-seven thousand, nine hundred forty".