1061524415921 has 2 divisors, whose sum is σ = 1061524415922. Its totient is φ = 1061524415920.

The previous prime is 1061524415899. The next prime is 1061524415929. The reversal of 1061524415921 is 1295144251601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052563143025 + 8961272896 = 1025945^2 + 94664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061524415921 - 2³⁰ = 1060450674097 is a prime.

It is a super-2 number, since 2×1061524415921² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061524415929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530762207960 + 530762207961.

It is an arithmetic number, because the mean of its divisors is an integer number (530762207961).

Almost surely, 2^{1061524415921} is an apocalyptic number.

It is an amenable number.

1061524415921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061524415921 is an equidigital number, since it uses as much as digits as its factorization.

1061524415921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 1061524415921 in words is "one trillion, sixty-one billion, five hundred twenty-four million, four hundred fifteen thousand, nine hundred twenty-one".