261674475226120 has 32 divisors (see below), whose sum is σ = 642291893737920. Its totient is φ = 95154354627520.

The previous prime is 261674475226079. The next prime is 261674475226133. The reversal of 261674475226120 is 21622574476162.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297357357772 + ... + 297357358651.

It is an arithmetic number, because the mean of its divisors is an integer number (20071621679310).

Almost surely, 2^{261674475226120} is an apocalyptic number.

261674475226120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261674475226120 is an abundant number, since it is smaller than the sum of its proper divisors (380617418511800).

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

261674475226120 is a wasteful number, since it uses less digits than its factorization.

261674475226120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594714716445 (or 594714716441 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 261674475226120 in words is "two hundred sixty-one trillion, six hundred seventy-four billion, four hundred seventy-five million, two hundred twenty-six thousand, one hundred twenty".