2155443502434 has 16 divisors (see below), whose sum is σ = 4311026290272. Its totient is φ = 718457953248.

The previous prime is 2155443502409. The next prime is 2155443502441. The reversal of 2155443502434 is 4342053445512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5601844 + ... + 5974239.

It is an arithmetic number, because the mean of its divisors is an integer number (269439143142).

Almost surely, 2^{2155443502434} is an apocalyptic number.

2155443502434 is an abundant number, since it is smaller than the sum of its proper divisors (2155582787838).

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

2155443502434 is a wasteful number, since it uses less digits than its factorization.

2155443502434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11607121.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 2155443502434 its reverse (4342053445512), we get a palindrome (6497496947946).

The spelling of 2155443502434 in words is "two trillion, one hundred fifty-five billion, four hundred forty-three million, five hundred two thousand, four hundred thirty-four".