20155163002 has 8 divisors (see below), whose sum is σ = 32558340276. Its totient is φ = 9302382912.

The previous prime is 20155162999. The next prime is 20155163029. The reversal of 20155163002 is 20036155102.

It can be written as a sum of positive squares in 2 ways, for example, as 14144107041 + 6011055961 = 118929^2 + 77531^2 .

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, 387599263 + ... + 387599314.

Almost surely, 2^20155163002 is an apocalyptic number.

20155163002 is a deficient number, since it is larger than the sum of its proper divisors (12403177274).

20155163002 is a wasteful number, since it uses less digits than its factorization.

20155163002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775198592.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 20155163002 in words is "twenty billion, one hundred fifty-five million, one hundred sixty-three thousand, two".