2106542154436 has 6 divisors (see below), whose sum is σ = 3686448770270. Its totient is φ = 1053271077216.

The previous prime is 2106542154331. The next prime is 2106542154449. The reversal of 2106542154436 is 6344512456012.

It can be written as a sum of positive squares in only one way, i.e., 2101757665536 + 4784488900 = 1449744^2 + 69170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2106542154392 and 2106542154401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263317769301 + ... + 263317769308.

Almost surely, 2^{2106542154436} is an apocalyptic number.

It is an amenable number.

2106542154436 is a deficient number, since it is larger than the sum of its proper divisors (1579906615834).

2106542154436 is a wasteful number, since it uses less digits than its factorization.

2106542154436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526635538613 (or 526635538611 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 2106542154436 in words is "two trillion, one hundred six billion, five hundred forty-two million, one hundred fifty-four thousand, four hundred thirty-six".