20460642402 has 16 divisors (see below), whose sum is σ = 41497641792. Its totient is φ = 6724154640.

The previous prime is 20460642401. The next prime is 20460642407. The reversal of 20460642402 is 20424606402.

It is a self number, because there is not a number n which added to its sum of digits gives 20460642402.

It is not an unprimeable number, because it can be changed into a prime (20460642401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24014413 + ... + 24015264.

It is an arithmetic number, because the mean of its divisors is an integer number (2593602612).

Almost surely, 2^20460642402 is an apocalyptic number.

20460642402 is an abundant number, since it is smaller than the sum of its proper divisors (21036999390).

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

20460642402 is a wasteful number, since it uses less digits than its factorization.

20460642402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48029753.

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20460642402 in words is "twenty billion, four hundred sixty million, six hundred forty-two thousand, four hundred two".