12511447508040 has 128 divisors (see below), whose sum is σ = 40422941395200. Its totient is φ = 3079638696960.

The previous prime is 12511447508017. The next prime is 12511447508047. The reversal of 12511447508040 is 4080574411521.

It is a junction number, because it is equal to n+sod(n) for n = 12511447507983 and 12511447508001.

It is not an unprimeable number, because it can be changed into a prime (12511447508047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53908566 + ... + 54140154.

It is an arithmetic number, because the mean of its divisors is an integer number (315804229650).

Almost surely, 2^{12511447508040} is an apocalyptic number.

12511447508040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12511447508040 is an abundant number, since it is smaller than the sum of its proper divisors (27911493887160).

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

12511447508040 is a wasteful number, since it uses less digits than its factorization.

12511447508040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266247 (or 266243 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The spelling of 12511447508040 in words is "twelve trillion, five hundred eleven billion, four hundred forty-seven million, five hundred eight thousand, forty".