7561430363261 has 32 divisors (see below), whose sum is σ = 8063591558400. Its totient is φ = 7070172480000.

The previous prime is 7561430363257. The next prime is 7561430363281. The reversal of 7561430363261 is 1623630341657.

It is a cyclic number.

It is not a de Polignac number, because 7561430363261 - 2² = 7561430363257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7561430363281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 871027841 + ... + 871036521.

It is an arithmetic number, because the mean of its divisors is an integer number (251987236200).

Almost surely, 2^{7561430363261} is an apocalyptic number.

It is an amenable number.

7561430363261 is a deficient number, since it is larger than the sum of its proper divisors (502161195139).

7561430363261 is a wasteful number, since it uses less digits than its factorization.

7561430363261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 7561430363261 in words is "seven trillion, five hundred sixty-one billion, four hundred thirty million, three hundred sixty-three thousand, two hundred sixty-one".