261469121039 has 12 divisors (see below), whose sum is σ = 304860425184. Its totient is φ = 223598781504.

The previous prime is 261469121029. The next prime is 261469121041. The reversal of 261469121039 is 930121964162.

It is a de Polignac number, because none of the positive numbers 2^k-261469121039 is a prime.

It is a super-2 number, since 2×261469121039² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261469121029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6140567 + ... + 6183000.

It is an arithmetic number, because the mean of its divisors is an integer number (25405035432).

Almost surely, 2^261469121039 is an apocalyptic number.

261469121039 is a deficient number, since it is larger than the sum of its proper divisors (43391304145).

261469121039 is a wasteful number, since it uses less digits than its factorization.

261469121039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12324014 (or 12324007 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 261469121039 in words is "two hundred sixty-one billion, four hundred sixty-nine million, one hundred twenty-one thousand, thirty-nine".