1012521465500 has 96 divisors (see below), whose sum is σ = 2277945633600. Its totient is φ = 392921472000.

The previous prime is 1012521465479. The next prime is 1012521465503. The reversal of 1012521465500 is 55641252101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012521465503) 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, 3531536 + ... + 3807464.

It is an arithmetic number, because the mean of its divisors is an integer number (23728600350).

Almost surely, 2^{1012521465500} is an apocalyptic number.

1012521465500 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 1012521465500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138972816800).

1012521465500 is an abundant number, since it is smaller than the sum of its proper divisors (1265424168100).

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

1012521465500 is a wasteful number, since it uses less digits than its factorization.

1012521465500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276168 (or 276156 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 1012521465500 in words is "one trillion, twelve billion, five hundred twenty-one million, four hundred sixty-five thousand, five hundred".