51507456000 has 1536 divisors, whose sum is σ = 233532149760. Its totient is φ = 9732096000.

The previous prime is 51507455999. The next prime is 51507456031. The reversal of 51507456000 is 65470515.

It is a tau number, because it is divible by the number of its divisors (1536).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 768767967 + ... + 768768033.

It is an arithmetic number, because the mean of its divisors is an integer number (152039160).

Almost surely, 2^51507456000 is an apocalyptic number.

51507456000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51507456000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116766074880).

51507456000 is an abundant number, since it is smaller than the sum of its proper divisors (182024693760).

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

51507456000 is a wasteful number, since it uses less digits than its factorization.

51507456000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 51507456000 in words is "fifty-one billion, five hundred seven million, four hundred fifty-six thousand".