32430777561 has 96 divisors (see below), whose sum is σ = 60785088000. Its totient is φ = 16192991232.

The previous prime is 32430777541. The next prime is 32430777563. The reversal of 32430777561 is 16577703423.

It is not a de Polignac number, because 32430777561 - 2⁵ = 32430777529 is a prime.

It is a super-2 number, since 2×32430777561² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32430777563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1818315 + ... + 1836063.

It is an arithmetic number, because the mean of its divisors is an integer number (633178000).

Almost surely, 2^32430777561 is an apocalyptic number.

It is an amenable number.

32430777561 is a deficient number, since it is larger than the sum of its proper divisors (28354310439).

32430777561 is a wasteful number, since it uses less digits than its factorization.

32430777561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17895 (or 17892 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 32430777561 in words is "thirty-two billion, four hundred thirty million, seven hundred seventy-seven thousand, five hundred sixty-one".