1213555441434 has 32 divisors (see below), whose sum is σ = 2937008128896. Its totient is φ = 326334236160.

The previous prime is 1213555441421. The next prime is 1213555441477. The reversal of 1213555441434 is 4341445553121.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849828027 + ... + 849829454.

It is an arithmetic number, because the mean of its divisors is an integer number (91781504028).

Almost surely, 2^{1213555441434} is an apocalyptic number.

1213555441434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1213555441434 is an abundant number, since it is smaller than the sum of its proper divisors (1723452687462).

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

1213555441434 is a wasteful number, since it uses less digits than its factorization.

1213555441434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699657510.

The product of its digits is 576000, while the sum is 42.

The spelling of 1213555441434 in words is "one trillion, two hundred thirteen billion, five hundred fifty-five million, four hundred forty-one thousand, four hundred thirty-four".