2099056213657 has 16 divisors (see below), whose sum is σ = 2393572244112. Its totient is φ = 1823554805760.

The previous prime is 2099056213649. The next prime is 2099056213687. The reversal of 2099056213657 is 7563126509902.

It can be written as a sum of positive squares in 8 ways, for example, as 2059707456 + 2096996506201 = 45384^2 + 1448101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2099056213657 - 2³ = 2099056213649 is a prime.

It is a super-2 number, since 2×2099056213657² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2099056213598 and 2099056213607.

It is not an unprimeable number, because it can be changed into a prime (2099056213687) 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, 7460073 + ... + 7736329.

It is an arithmetic number, because the mean of its divisors is an integer number (149598265257).

Almost surely, 2^{2099056213657} is an apocalyptic number.

It is an amenable number.

2099056213657 is a deficient number, since it is larger than the sum of its proper divisors (294516030455).

2099056213657 is a wasteful number, since it uses less digits than its factorization.

2099056213657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310668.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 2099056213657 in words is "two trillion, ninety-nine billion, fifty-six million, two hundred thirteen thousand, six hundred fifty-seven".