51059941920 has 384 divisors, whose sum is σ = 193715988480. Its totient is φ = 12486389760.

The previous prime is 51059941913. The next prime is 51059941927. The reversal of 51059941920 is 2914995015.

51059941920 is a `hidden beast` number, since 5 + 10 + 599 + 41 + 9 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (51059941913) and next prime (51059941927).

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

It is not an unprimeable number, because it can be changed into a prime (51059941927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8814225 + ... + 8820015.

It is an arithmetic number, because the mean of its divisors is an integer number (504468720).

Almost surely, 2^51059941920 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 51059941920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96857994240).

51059941920 is an abundant number, since it is smaller than the sum of its proper divisors (142656046560).

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

51059941920 is a wasteful number, since it uses less digits than its factorization.

51059941920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985 (or 5971 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The spelling of 51059941920 in words is "fifty-one billion, fifty-nine million, nine hundred forty-one thousand, nine hundred twenty".