20534533102402 has 64 divisors (see below), whose sum is σ = 36548396570880. Its totient is φ = 8545465958400.

The previous prime is 20534533102387. The next prime is 20534533102409. The reversal of 20534533102402 is 20420133543502.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (20534533102409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61842499 + ... + 62173657.

It is an arithmetic number, because the mean of its divisors is an integer number (571068696420).

Almost surely, 2^{20534533102402} is an apocalyptic number.

20534533102402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20534533102402 is a deficient number, since it is larger than the sum of its proper divisors (16013863468478).

20534533102402 is a wasteful number, since it uses less digits than its factorization.

20534533102402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335707.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20534533102402 its reverse (20420133543502), we get a palindrome (40954666645904).

The spelling of 20534533102402 in words is "twenty trillion, five hundred thirty-four billion, five hundred thirty-three million, one hundred two thousand, four hundred two".