1606213540272 has 80 divisors (see below), whose sum is σ = 4622912543232. Its totient is φ = 476375381760.

The previous prime is 1606213540241. The next prime is 1606213540339. The reversal of 1606213540272 is 2720453126061.

It is a super-2 number, since 2×1606213540272² (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 1606213540272.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32337643 + ... + 32387274.

Almost surely, 2^{1606213540272} is an apocalyptic number.

1606213540272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1606213540272 is an abundant number, since it is smaller than the sum of its proper divisors (3016699002960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606213540272 is a wasteful number, since it uses less digits than its factorization.

1606213540272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64724986 (or 64724980 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 1606213540272 in words is "one trillion, six hundred six billion, two hundred thirteen million, five hundred forty thousand, two hundred seventy-two".