2066136556 has 24 divisors (see below), whose sum is σ = 3945992400. Its totient is φ = 938784000.

The previous prime is 2066136547. The next prime is 2066136557. The reversal of 2066136556 is 6556316602.

It is a happy number.

It is a super-2 number, since 2×2066136556² = 8537840536079082272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2066136557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126456 + ... + 141856.

It is an arithmetic number, because the mean of its divisors is an integer number (164416350).

Almost surely, 2^2066136556 is an apocalyptic number.

It is an amenable number.

2066136556 is a deficient number, since it is larger than the sum of its proper divisors (1879855844).

2066136556 is a wasteful number, since it uses less digits than its factorization.

2066136556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18465 (or 18463 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 2066136556 is about 45454.7748426939. The cubic root of 2066136556 is about 1273.6585262341.

The spelling of 2066136556 in words is "two billion, sixty-six million, one hundred thirty-six thousand, five hundred fifty-six".