10202156066 has 4 divisors (see below), whose sum is σ = 15303234102. Its totient is φ = 5101078032.

The previous prime is 10202156021. The next prime is 10202156119. The reversal of 10202156066 is 66065120201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66065120201 = 101 ⋅654110101.

It can be written as a sum of positive squares in only one way, i.e., 9806742841 + 395413225 = 99029^2 + 19885^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550539015 + ... + 2550539018.

Almost surely, 2^10202156066 is an apocalyptic number.

10202156066 is a deficient number, since it is larger than the sum of its proper divisors (5101078036).

10202156066 is an equidigital number, since it uses as much as digits as its factorization.

10202156066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101078035.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 10202156066 its reverse (66065120201), we get a palindrome (76267276267).

The spelling of 10202156066 in words is "ten billion, two hundred two million, one hundred fifty-six thousand, sixty-six".