1245345121554 has 16 divisors (see below), whose sum is σ = 2576576113920. Its totient is φ = 400800728720.

The previous prime is 1245345121529. The next prime is 1245345121627. The reversal of 1245345121554 is 4551215435421.

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, 3578577762 + ... + 3578578109.

It is an arithmetic number, because the mean of its divisors is an integer number (161036007120).

Almost surely, 2^{1245345121554} is an apocalyptic number.

1245345121554 is an abundant number, since it is smaller than the sum of its proper divisors (1331230992366).

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

1245345121554 is a wasteful number, since it uses less digits than its factorization.

1245345121554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157155905.

The product of its digits is 480000, while the sum is 42.

The spelling of 1245345121554 in words is "one trillion, two hundred forty-five billion, three hundred forty-five million, one hundred twenty-one thousand, five hundred fifty-four".