1013521015400 has 48 divisors (see below), whose sum is σ = 2356619375040. Its totient is φ = 405376920000.

The previous prime is 1013521015391. The next prime is 1013521015421. The reversal of 1013521015400 is 45101253101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2475275 + ... + 2855525.

It is an arithmetic number, because the mean of its divisors is an integer number (49096236980).

Almost surely, 2^{1013521015400} is an apocalyptic number.

1013521015400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013521015400 is an abundant number, since it is smaller than the sum of its proper divisors (1343098359640).

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

1013521015400 is a wasteful number, since it uses less digits than its factorization.

1013521015400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393594 (or 393585 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 1013521015400 its reverse (45101253101), we get a palindrome (1058622268501).

The spelling of 1013521015400 in words is "one trillion, thirteen billion, five hundred twenty-one million, fifteen thousand, four hundred".