1240521055555 has 8 divisors (see below), whose sum is σ = 1495183088592. Its totient is φ = 988044963168.

The previous prime is 1240521055537. The next prime is 1240521055561. The reversal of 1240521055555 is 5555501250421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240521055555 - 2⁵ = 1240521055523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546483912 + ... + 546486181.

It is an arithmetic number, because the mean of its divisors is an integer number (186897886074).

Almost surely, 2^{1240521055555} is an apocalyptic number.

1240521055555 is a deficient number, since it is larger than the sum of its proper divisors (254662033037).

1240521055555 is a wasteful number, since it uses less digits than its factorization.

1240521055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092970325.

The product of its (nonzero) digits is 250000, while the sum is 40.

The spelling of 1240521055555 in words is "one trillion, two hundred forty billion, five hundred twenty-one million, fifty-five thousand, five hundred fifty-five".