261433211067 has 80 divisors (see below), whose sum is σ = 451413000192. Its totient is φ = 147696333120.

The previous prime is 261433211063. The next prime is 261433211089. The reversal of 261433211067 is 760112334162.

261433211067 is a `hidden beast` number, since 2 + 6 + 1 + 433 + 211 + 0 + 6 + 7 = 666.

It is not a de Polignac number, because 261433211067 - 2² = 261433211063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261433211063) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21092442 + ... + 21104832.

Almost surely, 2^261433211067 is an apocalyptic number.

261433211067 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

261433211067 is a deficient number, since it is larger than the sum of its proper divisors (189979789125).

261433211067 is a wasteful number, since it uses less digits than its factorization.

261433211067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830 (or 12821 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 261433211067 in words is "two hundred sixty-one billion, four hundred thirty-three million, two hundred eleven thousand, sixty-seven".