1662380909026 has 24 divisors (see below), whose sum is σ = 2631840056604. Its totient is φ = 787407475680.

The previous prime is 1662380908967. The next prime is 1662380909047. The reversal of 1662380909026 is 6209090832661.

It can be written as a sum of positive squares in 2 ways, for example, as 1552518492001 + 109862417025 = 1246001^2 + 331455^2 .

It is a super-2 number, since 2×1662380909026² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22180696 + ... + 22255516.

Almost surely, 2^{1662380909026} is an apocalyptic number.

1662380909026 is a deficient number, since it is larger than the sum of its proper divisors (969459147578).

1662380909026 is a wasteful number, since it uses less digits than its factorization.

1662380909026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105634 (or 105615 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 1662380909026 in words is "one trillion, six hundred sixty-two billion, three hundred eighty million, nine hundred nine thousand, twenty-six".