2155214402054 has 8 divisors (see below), whose sum is σ = 3694653260688. Its totient is φ = 923663315160.

The previous prime is 2155214402017. The next prime is 2155214402063. The reversal of 2155214402054 is 4502044125512.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76971942917 + ... + 76971942944.

It is an arithmetic number, because the mean of its divisors is an integer number (461831657586).

Almost surely, 2^{2155214402054} is an apocalyptic number.

2155214402054 is a deficient number, since it is larger than the sum of its proper divisors (1539438858634).

2155214402054 is a wasteful number, since it uses less digits than its factorization.

2155214402054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153943885870.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 2155214402054 its reverse (4502044125512), we get a palindrome (6657258527566).

The spelling of 2155214402054 in words is "two trillion, one hundred fifty-five billion, two hundred fourteen million, four hundred two thousand, fifty-four".