1521203544052 has 24 divisors (see below), whose sum is σ = 2777896731456. Its totient is φ = 727519877568.

The previous prime is 1521203544023. The next prime is 1521203544083. The reversal of 1521203544052 is 2504453021251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1521203543999 and 1521203544017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7801248 + ... + 7993864.

It is an arithmetic number, because the mean of its divisors is an integer number (115745697144).

Almost surely, 2^{1521203544052} is an apocalyptic number.

It is an amenable number.

1521203544052 is a deficient number, since it is larger than the sum of its proper divisors (1256693187404).

1521203544052 is a wasteful number, since it uses less digits than its factorization.

1521203544052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278487 (or 278485 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 1521203544052 in words is "one trillion, five hundred twenty-one billion, two hundred three million, five hundred forty-four thousand, fifty-two".