2155346444657 has 8 divisors (see below), whose sum is σ = 2467365360000. Its totient is φ = 1844355599424.

The previous prime is 2155346444627. The next prime is 2155346444717. The reversal of 2155346444657 is 7564446435512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155346444657 - 2⁸ = 2155346444401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155346444617) 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, 257013032 + ... + 257021417.

It is an arithmetic number, because the mean of its divisors is an integer number (308420670000).

Almost surely, 2^{2155346444657} is an apocalyptic number.

It is an amenable number.

2155346444657 is a deficient number, since it is larger than the sum of its proper divisors (312018915343).

2155346444657 is an equidigital number, since it uses as much as digits as its factorization.

2155346444657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514035055.

The product of its digits is 48384000, while the sum is 56.

The spelling of 2155346444657 in words is "two trillion, one hundred fifty-five billion, three hundred forty-six million, four hundred forty-four thousand, six hundred fifty-seven".