261363601102 has 8 divisors (see below), whose sum is σ = 392135066136. Its totient is φ = 130651912392.

The previous prime is 261363601099. The next prime is 261363601111. The reversal of 261363601102 is 201106363162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×261363601102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14933148 + ... + 14950639.

It is an arithmetic number, because the mean of its divisors is an integer number (49016883267).

Almost surely, 2^261363601102 is an apocalyptic number.

261363601102 is a deficient number, since it is larger than the sum of its proper divisors (130771465034).

261363601102 is a wasteful number, since it uses less digits than its factorization.

261363601102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29888162.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 261363601102 its reverse (201106363162), we get a palindrome (462469964264).

The spelling of 261363601102 in words is "two hundred sixty-one billion, three hundred sixty-three million, six hundred one thousand, one hundred two".