510616101561 has 16 divisors (see below), whose sum is σ = 682921190016. Its totient is φ = 339361358336.

The previous prime is 510616101517. The next prime is 510616101563. The reversal of 510616101561 is 165101616015.

It is a cyclic number.

It is not a de Polignac number, because 510616101561 - 2⁹ = 510616101049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (510616101563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4318516 + ... + 4435178.

It is an arithmetic number, because the mean of its divisors is an integer number (42682574376).

Almost surely, 2^510616101561 is an apocalyptic number.

It is an amenable number.

510616101561 is a deficient number, since it is larger than the sum of its proper divisors (172305088455).

510616101561 is a wasteful number, since it uses less digits than its factorization.

510616101561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121152.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 510616101561 its reverse (165101616015), we get a palindrome (675717717576).

The spelling of 510616101561 in words is "five hundred ten billion, six hundred sixteen million, one hundred one thousand, five hundred sixty-one".