2100646996454 has 8 divisors (see below), whose sum is σ = 3259624649760. Its totient is φ = 1014105446536.

The previous prime is 2100646996453. The next prime is 2100646996457. The reversal of 2100646996454 is 4546996460012.

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

It is a super-2 number, since 2×2100646996454² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2100646996454.

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 3 ways as a sum of consecutive naturals, for example, 18109025774 + ... + 18109025889.

It is an arithmetic number, because the mean of its divisors is an integer number (407453081220).

Almost surely, 2^{2100646996454} is an apocalyptic number.

2100646996454 is a deficient number, since it is larger than the sum of its proper divisors (1158977653306).

2100646996454 is a wasteful number, since it uses less digits than its factorization.

2100646996454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36218051694.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 2100646996454 in words is "two trillion, one hundred billion, six hundred forty-six million, nine hundred ninety-six thousand, four hundred fifty-four".