20423481465 has 32 divisors (see below), whose sum is σ = 34113208320. Its totient is φ = 10414390976.

The previous prime is 20423481409. The next prime is 20423481467. The reversal of 20423481465 is 56418432402.

It is a cyclic number.

It is not a de Polignac number, because 20423481465 - 2¹² = 20423477369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20423481467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 865696 + ... + 888974.

It is an arithmetic number, because the mean of its divisors is an integer number (1066037760).

Almost surely, 2^20423481465 is an apocalyptic number.

It is an amenable number.

20423481465 is a deficient number, since it is larger than the sum of its proper divisors (13689726855).

20423481465 is a wasteful number, since it uses less digits than its factorization.

20423481465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25853.

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 20423481465 in words is "twenty billion, four hundred twenty-three million, four hundred eighty-one thousand, four hundred sixty-five".