2156101105445 has 8 divisors (see below), whose sum is σ = 2956938658944. Its totient is φ = 1478469329424.

The previous prime is 2156101105441. The next prime is 2156101105451. The reversal of 2156101105445 is 5445011016512.

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 2156101105445 - 2² = 2156101105441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 61602888727 = 2156101105445 / (2 + 1 + 5 + 6 + 1 + 0 + 1 + 1 + 0 + 5 + 4 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156101105441) 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, 30801444329 + ... + 30801444398.

It is an arithmetic number, because the mean of its divisors is an integer number (369617332368).

Almost surely, 2^{2156101105445} is an apocalyptic number.

It is an amenable number.

2156101105445 is a deficient number, since it is larger than the sum of its proper divisors (800837553499).

2156101105445 is an equidigital number, since it uses as much as digits as its factorization.

2156101105445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61602888739.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 2156101105445 in words is "two trillion, one hundred fifty-six billion, one hundred one million, one hundred five thousand, four hundred forty-five".