32555613997 has 2 divisors, whose sum is σ = 32555613998. Its totient is φ = 32555613996.

The previous prime is 32555613931. The next prime is 32555614019. The reversal of 32555613997 is 79931655523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28558972036 + 3996641961 = 168994^2 + 63219^2 .

It is a cyclic number.

It is not a de Polignac number, because 32555613997 - 2⁷ = 32555613869 is a prime.

It is a super-3 number, since 3×32555613997³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32555613907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16277806998 + 16277806999.

It is an arithmetic number, because the mean of its divisors is an integer number (16277806999).

Almost surely, 2^32555613997 is an apocalyptic number.

It is an amenable number.

32555613997 is a deficient number, since it is larger than the sum of its proper divisors (1).

32555613997 is an equidigital number, since it uses as much as digits as its factorization.

32555613997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7654500, while the sum is 55.

The spelling of 32555613997 in words is "thirty-two billion, five hundred fifty-five million, six hundred thirteen thousand, nine hundred ninety-seven".