1521381246960 has 160 divisors (see below), whose sum is σ = 4844947760640. Its totient is φ = 394639064064.

The previous prime is 1521381246941. The next prime is 1521381246967. The reversal of 1521381246960 is 696421831251.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521381246967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40145301 + ... + 40183179.

It is an arithmetic number, because the mean of its divisors is an integer number (30280923504).

Almost surely, 2^{1521381246960} is an apocalyptic number.

1521381246960 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 1521381246960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2422473880320).

1521381246960 is an abundant number, since it is smaller than the sum of its proper divisors (3323566513680).

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

1521381246960 is a wasteful number, since it uses less digits than its factorization.

1521381246960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42455 (or 42449 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 1521381246960 in words is "one trillion, five hundred twenty-one billion, three hundred eighty-one million, two hundred forty-six thousand, nine hundred sixty".