12534515370 has 384 divisors, whose sum is σ = 37908933120. Its totient is φ = 2943682560.

The previous prime is 12534515359. The next prime is 12534515377. The reversal of 12534515370 is 7351543521.

12534515370 is a `hidden beast` number, since 1 + 2 + 534 + 5 + 1 + 53 + 70 = 666.

It is a super-3 number, since 3×12534515370³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12534515377) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 171705654 + ... + 171705726.

It is an arithmetic number, because the mean of its divisors is an integer number (98721180).

Almost surely, 2^12534515370 is an apocalyptic number.

12534515370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12534515370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18954466560).

12534515370 is an abundant number, since it is smaller than the sum of its proper divisors (25374417750).

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

12534515370 is a wasteful number, since it uses less digits than its factorization.

12534515370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

It can be divided in two parts, 125345 and 15370, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 12534515370 in words is "twelve billion, five hundred thirty-four million, five hundred fifteen thousand, three hundred seventy".