2561102124104 has 8 divisors (see below), whose sum is σ = 4802066482710. Its totient is φ = 1280551062048.

The previous prime is 2561102124101. The next prime is 2561102124127. The reversal of 2561102124104 is 4014212011652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1565756695204 + 995345428900 = 1251302^2 + 997670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2561102124101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160068882749 + ... + 160068882764.

Almost surely, 2^{2561102124104} is an apocalyptic number.

It is an amenable number.

2561102124104 is a deficient number, since it is larger than the sum of its proper divisors (2240964358606).

2561102124104 is a wasteful number, since it uses less digits than its factorization.

2561102124104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320137765519 (or 320137765515 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 2561102124104 its reverse (4014212011652), we get a palindrome (6575314135756).

The spelling of 2561102124104 in words is "two trillion, five hundred sixty-one billion, one hundred two million, one hundred twenty-four thousand, one hundred four".