20430603402 has 48 divisors (see below), whose sum is σ = 45358409376. Its totient is φ = 6129772000.

The previous prime is 20430603377. The next prime is 20430603409.

It is a happy number.

20430603402 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20430603409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65988 + ... + 212639.

It is an arithmetic number, because the mean of its divisors is an integer number (944966862).

Almost surely, 2^20430603402 is an apocalyptic number.

20430603402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20430603402 is an abundant number, since it is smaller than the sum of its proper divisors (24927805974).

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

20430603402 is a wasteful number, since it uses less digits than its factorization.

20430603402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278755 (or 278744 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The spelling of 20430603402 in words is "twenty billion, four hundred thirty million, six hundred three thousand, four hundred two".