1520863554272 has 36 divisors (see below), whose sum is σ = 3180690114840. Its totient is φ = 715700491776.

The previous prime is 1520863554253. The next prime is 1520863554277. The reversal of 1520863554272 is 2724553680251.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520863554272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520863554277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82217372 + ... + 82235867.

It is an arithmetic number, because the mean of its divisors is an integer number (88352503190).

Almost surely, 2^{1520863554272} is an apocalyptic number.

It is an amenable number.

1520863554272 is an abundant number, since it is smaller than the sum of its proper divisors (1659826560568).

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

1520863554272 is a wasteful number, since it uses less digits than its factorization.

1520863554272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164453283 (or 164453258 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 1520863554272 in words is "one trillion, five hundred twenty billion, eight hundred sixty-three million, five hundred fifty-four thousand, two hundred seventy-two".