261474048801158 has 4 divisors (see below), whose sum is σ = 392211073201740. Its totient is φ = 130737024400578.

The previous prime is 261474048801157. The next prime is 261474048801187. The reversal of 261474048801158 is 851108840474162.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 261474048801097 and 261474048801106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261474048801157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65368512200288 + ... + 65368512200291.

It is an arithmetic number, because the mean of its divisors is an integer number (98052768300435).

Almost surely, 2^{261474048801158} is an apocalyptic number.

261474048801158 is a deficient number, since it is larger than the sum of its proper divisors (130737024400582).

261474048801158 is a wasteful number, since it uses less digits than its factorization.

261474048801158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130737024400581.

The product of its (nonzero) digits is 13762560, while the sum is 59.

The spelling of 261474048801158 in words is "two hundred sixty-one trillion, four hundred seventy-four billion, forty-eight million, eight hundred one thousand, one hundred fifty-eight".