20400023101302 has 48 divisors (see below), whose sum is σ = 47601132113808. Its totient is φ = 6276788003520.

The previous prime is 20400023101291. The next prime is 20400023101319. The reversal of 20400023101302 is 20310132000402.

20400023101302 is a `hidden beast` number, since 2 + 0 + 400 + 0 + 231 + 0 + 1 + 30 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9607573 + ... + 11537135.

It is an arithmetic number, because the mean of its divisors is an integer number (991690252371).

Almost surely, 2^{20400023101302} is an apocalyptic number.

20400023101302 is an abundant number, since it is smaller than the sum of its proper divisors (27201109012506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20400023101302 is a wasteful number, since it uses less digits than its factorization.

20400023101302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974765 (or 1974762 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20400023101302 its reverse (20310132000402), we get a palindrome (40710155101704).

The spelling of 20400023101302 in words is "twenty trillion, four hundred billion, twenty-three million, one hundred one thousand, three hundred two".