20432477461 has 32 divisors (see below), whose sum is σ = 22967193600. Its totient is φ = 18018626880.

The previous prime is 20432477459. The next prime is 20432477473. The reversal of 20432477461 is 16477423402.

It is not a de Polignac number, because 20432477461 - 2¹ = 20432477459 is a prime.

It is a super-2 number, since 2×20432477461² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432417461) 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, 52525455 + ... + 52525843.

It is an arithmetic number, because the mean of its divisors is an integer number (717724800).

Almost surely, 2^20432477461 is an apocalyptic number.

It is an amenable number.

20432477461 is a deficient number, since it is larger than the sum of its proper divisors (2534716139).

20432477461 is a wasteful number, since it uses less digits than its factorization.

20432477461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 20432477461 in words is "twenty billion, four hundred thirty-two million, four hundred seventy-seven thousand, four hundred sixty-one".