2155434441004 has 48 divisors (see below), whose sum is σ = 4172559941088. Its totient is φ = 967788200448.

The previous prime is 2155434441001. The next prime is 2155434441151. The reversal of 2155434441004 is 4001444345512.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2155434441001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13761459 + ... + 13917205.

It is an arithmetic number, because the mean of its divisors is an integer number (86928332106).

Almost surely, 2^{2155434441004} is an apocalyptic number.

It is an amenable number.

2155434441004 is a deficient number, since it is larger than the sum of its proper divisors (2017125500084).

2155434441004 is a wasteful number, since it uses less digits than its factorization.

2155434441004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162994 (or 162992 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 2155434441004 its reverse (4001444345512), we get a palindrome (6156878786516).

The spelling of 2155434441004 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-four million, four hundred forty-one thousand, four".