15630001061 has 2 divisors, whose sum is σ = 15630001062. Its totient is φ = 15630001060.

The previous prime is 15630000977. The next prime is 15630001067. The reversal of 15630001061 is 16010003651.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15502740100 + 127260961 = 124510^2 + 11281^2 .

It is an emirp because it is prime and its reverse (16010003651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15630001061 is a prime.

It is a super-2 number, since 2×15630001061² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15630001067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7815000530 + 7815000531.

It is an arithmetic number, because the mean of its divisors is an integer number (7815000531).

Almost surely, 2^15630001061 is an apocalyptic number.

It is an amenable number.

15630001061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15630001061 is an equidigital number, since it uses as much as digits as its factorization.

15630001061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The spelling of 15630001061 in words is "fifteen billion, six hundred thirty million, one thousand, sixty-one".