15530970641 has 2 divisors, whose sum is σ = 15530970642. Its totient is φ = 15530970640.

The previous prime is 15530970617. The next prime is 15530970659. The reversal of 15530970641 is 14607903551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9861483025 + 5669487616 = 99305^2 + 75296^2 .

It is a cyclic number.

It is not a de Polignac number, because 15530970641 - 2¹⁸ = 15530708497 is a prime.

It is a super-2 number, since 2×15530970641² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15530270641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765485320 + 7765485321.

It is an arithmetic number, because the mean of its divisors is an integer number (7765485321).

Almost surely, 2^15530970641 is an apocalyptic number.

It is an amenable number.

15530970641 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530970641 is an equidigital number, since it uses as much as digits as its factorization.

15530970641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 15530970641 in words is "fifteen billion, five hundred thirty million, nine hundred seventy thousand, six hundred forty-one".