20402001334 has 16 divisors (see below), whose sum is σ = 35953177680. Its totient is φ = 8560280160.

The previous prime is 20402001331. The next prime is 20402001337. The reversal of 20402001334 is 43310020402.

It is an interprime number because it is at equal distance from previous prime (20402001331) and next prime (20402001337).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402001331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35667549 + ... + 35668120.

It is an arithmetic number, because the mean of its divisors is an integer number (2247073605).

Almost surely, 2^20402001334 is an apocalyptic number.

20402001334 is a deficient number, since it is larger than the sum of its proper divisors (15551176346).

20402001334 is a wasteful number, since it uses less digits than its factorization.

20402001334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71335695.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20402001334 its reverse (43310020402), we get a palindrome (63712021736).

The spelling of 20402001334 in words is "twenty billion, four hundred two million, one thousand, three hundred thirty-four".