20692459430 has 32 divisors (see below), whose sum is σ = 37616508864. Its totient is φ = 8194902016.

The previous prime is 20692459399. The next prime is 20692459499. The reversal of 20692459430 is 3495429602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094639 + ... + 1113381.

It is an arithmetic number, because the mean of its divisors is an integer number (1175515902).

Almost surely, 2^20692459430 is an apocalyptic number.

20692459430 is a deficient number, since it is larger than the sum of its proper divisors (16924049434).

20692459430 is a wasteful number, since it uses less digits than its factorization.

20692459430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19840.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 20692459430 in words is "twenty billion, six hundred ninety-two million, four hundred fifty-nine thousand, four hundred thirty".