2061190109557 has 2 divisors, whose sum is σ = 2061190109558. Its totient is φ = 2061190109556.

The previous prime is 2061190109521. The next prime is 2061190109591. The reversal of 2061190109557 is 7559010911602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1555442986276 + 505747123281 = 1247174^2 + 711159^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061190109557 - 2³¹ = 2059042625909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061190109257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030595054778 + 1030595054779.

It is an arithmetic number, because the mean of its divisors is an integer number (1030595054779).

Almost surely, 2^{2061190109557} is an apocalyptic number.

It is an amenable number.

2061190109557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061190109557 is an equidigital number, since it uses as much as digits as its factorization.

2061190109557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 46.

The spelling of 2061190109557 in words is "two trillion, sixty-one billion, one hundred ninety million, one hundred nine thousand, five hundred fifty-seven".