20155166002 has 8 divisors (see below), whose sum is σ = 30244416156. Its totient is φ = 10073693952.

The previous prime is 20155165973. The next prime is 20155166011. The reversal of 20155166002 is 20066155102.

It can be written as a sum of positive squares in 2 ways, for example, as 18788459041 + 1366706961 = 137071^2 + 36969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938043 + ... + 1948414.

Almost surely, 2^20155166002 is an apocalyptic number.

20155166002 is a deficient number, since it is larger than the sum of its proper divisors (10089250154).

20155166002 is a wasteful number, since it uses less digits than its factorization.

20155166002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889052.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 20155166002 in words is "twenty billion, one hundred fifty-five million, one hundred sixty-six thousand, two".