20406062602 has 8 divisors (see below), whose sum is σ = 30609910116. Its totient is φ = 10202759232.

The previous prime is 20406062569. The next prime is 20406062603. The reversal of 20406062602 is 20626060402.

It can be written as a sum of positive squares in 2 ways, for example, as 17744637681 + 2661424921 = 133209^2 + 51589^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20406062603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23743 + ... + 203410.

Almost surely, 2^20406062602 is an apocalyptic number.

20406062602 is a deficient number, since it is larger than the sum of its proper divisors (10203847514).

20406062602 is a wasteful number, since it uses less digits than its factorization.

20406062602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272072.

The product of its (nonzero) digits is 6912, while the sum is 28.

It can be divided in two parts, 204060 and 62602, that added together give a palindrome (266662).

The spelling of 20406062602 in words is "twenty billion, four hundred six million, sixty-two thousand, six hundred two".