787574650561 has 2 divisors, whose sum is σ = 787574650562. Its totient is φ = 787574650560.

The previous prime is 787574650537. The next prime is 787574650601. The reversal of 787574650561 is 165056475787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420785742400 + 366788908161 = 648680^2 + 605631^2 .

It is a cyclic number.

It is not a de Polignac number, because 787574650561 - 2¹³ = 787574642369 is a prime.

It is a super-2 number, since 2×787574650561² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 787574650561.

It is not a weakly prime, because it can be changed into another prime (787574650531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393787325280 + 393787325281.

It is an arithmetic number, because the mean of its divisors is an integer number (393787325281).

Almost surely, 2^787574650561 is an apocalyptic number.

It is an amenable number.

787574650561 is a deficient number, since it is larger than the sum of its proper divisors (1).

787574650561 is an equidigital number, since it uses as much as digits as its factorization.

787574650561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392000, while the sum is 61.

The spelling of 787574650561 in words is "seven hundred eighty-seven billion, five hundred seventy-four million, six hundred fifty thousand, five hundred sixty-one".