1240512656432 has 40 divisors (see below), whose sum is σ = 2746907046816. Its totient is φ = 531637134336.

The previous prime is 1240512656419. The next prime is 1240512656437. The reversal of 1240512656432 is 2346562150421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240512656432.

It is not an unprimeable number, because it can be changed into a prime (1240512656437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7427798 + ... + 7592970.

Almost surely, 2^{1240512656432} is an apocalyptic number.

It is an amenable number.

1240512656432 is an abundant number, since it is smaller than the sum of its proper divisors (1506394390384).

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

1240512656432 is a wasteful number, since it uses less digits than its factorization.

1240512656432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232245 (or 232239 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 1240512656432 in words is "one trillion, two hundred forty billion, five hundred twelve million, six hundred fifty-six thousand, four hundred thirty-two".