12051507751920 has 800 divisors, whose sum is σ = 54227317562880. Its totient is φ = 2408905267200.

The previous prime is 12051507751919. The next prime is 12051507751931. The reversal of 12051507751920 is 2915770515021.

12051507751920 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 1 + 507 + 7 + 51 + 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 159 ways as a sum of consecutive naturals, for example, 10666095 + ... + 11741745.

Almost surely, 2^{12051507751920} is an apocalyptic number.

12051507751920 is a gapful number since it is divisible by the number (10) 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 12051507751920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27113658781440).

12051507751920 is an abundant number, since it is smaller than the sum of its proper divisors (42175809810960).

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

12051507751920 is a wasteful number, since it uses less digits than its factorization.

12051507751920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075715 (or 1075700 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 45.

The spelling of 12051507751920 in words is "twelve trillion, fifty-one billion, five hundred seven million, seven hundred fifty-one thousand, nine hundred twenty".