20400213002 has 8 divisors (see below), whose sum is σ = 32954190276. Its totient is φ = 9415482912.

The previous prime is 20400212971. The next prime is 20400213157. The reversal of 20400213002 is 20031200402.

It can be written as a sum of positive squares in 2 ways, for example, as 20383558441 + 16654561 = 142771^2 + 4081^2 .

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, 392311763 + ... + 392311814.

Almost surely, 2^20400213002 is an apocalyptic number.

20400213002 is a deficient number, since it is larger than the sum of its proper divisors (12553977274).

20400213002 is a wasteful number, since it uses less digits than its factorization.

20400213002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784623592.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20400213002 its reverse (20031200402), we get a palindrome (40431413404).

The spelling of 20400213002 in words is "twenty billion, four hundred million, two hundred thirteen thousand, two".