106854492721 has 2 divisors, whose sum is σ = 106854492722. Its totient is φ = 106854492720.

The previous prime is 106854492571. The next prime is 106854492727. The reversal of 106854492721 is 127294458601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106511502321 + 342990400 = 326361^2 + 18520^2 .

It is a cyclic number.

It is not a de Polignac number, because 106854492721 - 2²¹ = 106852395569 is a prime.

It is a super-2 number, since 2×106854492721² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106854492727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53427246360 + 53427246361.

It is an arithmetic number, because the mean of its divisors is an integer number (53427246361).

Almost surely, 2^106854492721 is an apocalyptic number.

It is an amenable number.

106854492721 is a deficient number, since it is larger than the sum of its proper divisors (1).

106854492721 is an equidigital number, since it uses as much as digits as its factorization.

106854492721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 106854492721 in words is "one hundred six billion, eight hundred fifty-four million, four hundred ninety-two thousand, seven hundred twenty-one".