2155444154553 has 8 divisors (see below), whose sum is σ = 3025184778400. Its totient is φ = 1361333150208.

The previous prime is 2155444154537. The next prime is 2155444154573. The reversal of 2155444154553 is 3554514445512.

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

It is not a de Polignac number, because 2155444154553 - 2⁴ = 2155444154537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155444154573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18907404808 + ... + 18907404921.

It is an arithmetic number, because the mean of its divisors is an integer number (378148097300).

Almost surely, 2^{2155444154553} is an apocalyptic number.

It is an amenable number.

2155444154553 is a deficient number, since it is larger than the sum of its proper divisors (869740623847).

2155444154553 is a wasteful number, since it uses less digits than its factorization.

2155444154553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37814809751.

The product of its digits is 4800000, while the sum is 48.

The spelling of 2155444154553 in words is "two trillion, one hundred fifty-five billion, four hundred forty-four million, one hundred fifty-four thousand, five hundred fifty-three".