261347615707 has 2 divisors, whose sum is σ = 261347615708. Its totient is φ = 261347615706.

The previous prime is 261347615681. The next prime is 261347615713. The reversal of 261347615707 is 707516743162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261347615707 - 2¹⁵ = 261347582939 is a prime.

It is not a weakly prime, because it can be changed into another prime (261347615777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130673807853 + 130673807854.

It is an arithmetic number, because the mean of its divisors is an integer number (130673807854).

Almost surely, 2^261347615707 is an apocalyptic number.

261347615707 is a deficient number, since it is larger than the sum of its proper divisors (1).

261347615707 is an equidigital number, since it uses as much as digits as its factorization.

261347615707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 261347615707 in words is "two hundred sixty-one billion, three hundred forty-seven million, six hundred fifteen thousand, seven hundred seven".