32121471761 has 2 divisors, whose sum is σ = 32121471762. Its totient is φ = 32121471760.

The previous prime is 32121471751. The next prime is 32121471773. The reversal of 32121471761 is 16717412123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18973409536 + 13148062225 = 137744^2 + 114665^2 .

It is a cyclic number.

It is not a de Polignac number, because 32121471761 - 2²² = 32117277457 is a prime.

It is a super-2 number, since 2×32121471761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32121471751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060735880 + 16060735881.

It is an arithmetic number, because the mean of its divisors is an integer number (16060735881).

Almost surely, 2^32121471761 is an apocalyptic number.

It is an amenable number.

32121471761 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121471761 is an equidigital number, since it uses as much as digits as its factorization.

32121471761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

Adding to 32121471761 its reverse (16717412123), we get a palindrome (48838883884).

The spelling of 32121471761 in words is "thirty-two billion, one hundred twenty-one million, four hundred seventy-one thousand, seven hundred sixty-one".