1204162151261 has 2 divisors, whose sum is σ = 1204162151262. Its totient is φ = 1204162151260.

The previous prime is 1204162151221. The next prime is 1204162151303. The reversal of 1204162151261 is 1621512614021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024004348761 + 180157802500 = 1011931^2 + 424450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204162151261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204162151221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602081075630 + 602081075631.

It is an arithmetic number, because the mean of its divisors is an integer number (602081075631).

Almost surely, 2^{1204162151261} is an apocalyptic number.

It is an amenable number.

1204162151261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204162151261 is an equidigital number, since it uses as much as digits as its factorization.

1204162151261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 1204162151261 its reverse (1621512614021), we get a palindrome (2825674765282).

The spelling of 1204162151261 in words is "one trillion, two hundred four billion, one hundred sixty-two million, one hundred fifty-one thousand, two hundred sixty-one".