261770644034036 has 24 divisors (see below), whose sum is σ = 458165395475424. Its totient is φ = 130866246360800.

The previous prime is 261770644034023. The next prime is 261770644034083. The reversal of 261770644034036 is 630430446077162.

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, 1213518206 + ... + 1213733898.

It is an arithmetic number, because the mean of its divisors is an integer number (19090224811476).

Almost surely, 2^{261770644034036} is an apocalyptic number.

It is an amenable number.

261770644034036 is a deficient number, since it is larger than the sum of its proper divisors (196394751441388).

261770644034036 is a wasteful number, since it uses less digits than its factorization.

261770644034036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258511 (or 258509 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 53.

The spelling of 261770644034036 in words is "two hundred sixty-one trillion, seven hundred seventy billion, six hundred forty-four million, thirty-four thousand, thirty-six".