2100646996455 has 32 divisors (see below), whose sum is σ = 3841458766848. Its totient is φ = 960226848000.

The previous prime is 2100646996453. The next prime is 2100646996457. The reversal of 2100646996455 is 5546996460012.

It is an interprime number because it is at equal distance from previous prime (2100646996453) and next prime (2100646996457).

It is not a de Polignac number, because 2100646996455 - 2¹ = 2100646996453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100646996395 and 2100646996404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100646996451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766555 + ... + 2188355.

It is an arithmetic number, because the mean of its divisors is an integer number (120045586464).

Almost surely, 2^{2100646996455} is an apocalyptic number.

2100646996455 is a deficient number, since it is larger than the sum of its proper divisors (1740811770393).

2100646996455 is a wasteful number, since it uses less digits than its factorization.

2100646996455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435887.

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 2100646996455 in words is "two trillion, one hundred billion, six hundred forty-six million, nine hundred ninety-six thousand, four hundred fifty-five".