36542641997 has 2 divisors, whose sum is σ = 36542641998. Its totient is φ = 36542641996.

The previous prime is 36542641943. The next prime is 36542642011. The reversal of 36542641997 is 79914624563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28999024681 + 7543617316 = 170291^2 + 86854^2 .

It is a cyclic number.

It is not a de Polignac number, because 36542641997 - 2⁸ = 36542641741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36542641897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18271320998 + 18271320999.

It is an arithmetic number, because the mean of its divisors is an integer number (18271320999).

Almost surely, 2^36542641997 is an apocalyptic number.

It is an amenable number.

36542641997 is a deficient number, since it is larger than the sum of its proper divisors (1).

36542641997 is an equidigital number, since it uses as much as digits as its factorization.

36542641997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 56.

The spelling of 36542641997 in words is "thirty-six billion, five hundred forty-two million, six hundred forty-one thousand, nine hundred ninety-seven".