261421654611224 has 32 divisors (see below), whose sum is σ = 494636878810800. Its totient is φ = 129521434623360.

The previous prime is 261421654611211. The next prime is 261421654611239. The reversal of 261421654611224 is 422116456124162.

261421654611224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183521039 + ... + 184940030.

Almost surely, 2^{261421654611224} is an apocalyptic number.

It is an amenable number.

261421654611224 is a deficient number, since it is larger than the sum of its proper divisors (233215224199576).

261421654611224 is a wasteful number, since it uses less digits than its factorization.

261421654611224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368461883 (or 368461879 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The spelling of 261421654611224 in words is "two hundred sixty-one trillion, four hundred twenty-one billion, six hundred fifty-four million, six hundred eleven thousand, two hundred twenty-four".