202561677122071 has 2 divisors, whose sum is σ = 202561677122072. Its totient is φ = 202561677122070.

The previous prime is 202561677122053. The next prime is 202561677122111. The reversal of 202561677122071 is 170221776165202.

It is a happy number.

202561677122071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202561677122071 - 2⁵ = 202561677122039 is a prime.

It is a super-2 number, since 2×202561677122071² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202561677122671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101280838561035 + 101280838561036.

It is an arithmetic number, because the mean of its divisors is an integer number (101280838561036).

Almost surely, 2^{202561677122071} is an apocalyptic number.

202561677122071 is a deficient number, since it is larger than the sum of its proper divisors (1).

202561677122071 is an equidigital number, since it uses as much as digits as its factorization.

202561677122071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 202561677122071 in words is "two hundred two trillion, five hundred sixty-one billion, six hundred seventy-seven million, one hundred twenty-two thousand, seventy-one".