261422760708 has 36 divisors (see below), whose sum is σ = 671651743308. Its totient is φ = 85712379840.

The previous prime is 261422760689. The next prime is 261422760713. The reversal of 261422760708 is 807067224162.

It is a happy number.

261422760708 is a `hidden beast` number, since 2 + 6 + 14 + 2 + 27 + 607 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 135753928704 + 125668832004 = 368448^2 + 354498^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×261422760708² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59520291 + ... + 59524682.

Almost surely, 2^261422760708 is an apocalyptic number.

It is an amenable number.

261422760708 is an abundant number, since it is smaller than the sum of its proper divisors (410228982600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261422760708 is a wasteful number, since it uses less digits than its factorization.

261422760708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119045044 (or 119045039 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 261422760708 in words is "two hundred sixty-one billion, four hundred twenty-two million, seven hundred sixty thousand, seven hundred eight".