20115035402 has 24 divisors (see below), whose sum is σ = 37902714528. Its totient is φ = 7837026120.

The previous prime is 20115035401. The next prime is 20115035407. The reversal of 20115035402 is 20453051102.

It is a super-2 number, since 2×20115035402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20115035401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5935448 + ... + 5938835.

It is an arithmetic number, because the mean of its divisors is an integer number (1579279772).

Almost surely, 2^20115035402 is an apocalyptic number.

20115035402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20115035402 is a deficient number, since it is larger than the sum of its proper divisors (17787679126).

20115035402 is a wasteful number, since it uses less digits than its factorization.

20115035402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11874314 (or 11874303 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20115035402 its reverse (20453051102), we get a palindrome (40568086504).

The spelling of 20115035402 in words is "twenty billion, one hundred fifteen million, thirty-five thousand, four hundred two".