51454033920 has 480 divisors, whose sum is σ = 187542579840. Its totient is φ = 13377208320.

The previous prime is 51454033919. The next prime is 51454033973. The reversal of 51454033920 is 2933045415.

51454033920 is a `hidden beast` number, since 514 + 54 + 0 + 3 + 3 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95108850 + ... + 95109390.

It is an arithmetic number, because the mean of its divisors is an integer number (390713708).

Almost surely, 2^51454033920 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 51454033920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93771289920).

51454033920 is an abundant number, since it is smaller than the sum of its proper divisors (136088545920).

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

51454033920 is an equidigital number, since it uses as much as digits as its factorization.

51454033920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 51454033920 in words is "fifty-one billion, four hundred fifty-four million, thirty-three thousand, nine hundred twenty".