261260651062 has 4 divisors (see below), whose sum is σ = 391890976596. Its totient is φ = 130630325530.

The previous prime is 261260650949. The next prime is 261260651107. The reversal of 261260651062 is 260156062162.

261260651062 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65315162764 + ... + 65315162767.

It is an arithmetic number, because the mean of its divisors is an integer number (97972744149).

Almost surely, 2^261260651062 is an apocalyptic number.

261260651062 is a deficient number, since it is larger than the sum of its proper divisors (130630325534).

261260651062 is a wasteful number, since it uses less digits than its factorization.

261260651062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130630325533.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 261260651062 in words is "two hundred sixty-one billion, two hundred sixty million, six hundred fifty-one thousand, sixty-two".