1515213772452 has 72 divisors (see below), whose sum is σ = 3837642865056. Its totient is φ = 504080204544.

The previous prime is 1515213772451. The next prime is 1515213772469. The reversal of 1515213772452 is 2542773125151.

1515213772452 is a `hidden beast` number, since 1 + 5 + 1 + 521 + 3 + 7 + 72 + 4 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1515213772398 and 1515213772407.

It is not an unprimeable number, because it can be changed into a prime (1515213772451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102185463 + ... + 102200289.

It is an arithmetic number, because the mean of its divisors is an integer number (53300595348).

Almost surely, 2^{1515213772452} is an apocalyptic number.

1515213772452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1515213772452 is an abundant number, since it is smaller than the sum of its proper divisors (2322429092604).

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

1515213772452 is a wasteful number, since it uses less digits than its factorization.

1515213772452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20217 (or 20212 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The spelling of 1515213772452 in words is "one trillion, five hundred fifteen billion, two hundred thirteen million, seven hundred seventy-two thousand, four hundred fifty-two".