261265301004 has 48 divisors (see below), whose sum is σ = 646011072000. Its totient is φ = 81951097536.

The previous prime is 261265300997. The next prime is 261265301027. The reversal of 261265301004 is 400103562162.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3811332 + ... + 3879275.

It is an arithmetic number, because the mean of its divisors is an integer number (13458564000).

Almost surely, 2^261265301004 is an apocalyptic number.

It is an amenable number.

261265301004 is an abundant number, since it is smaller than the sum of its proper divisors (384745770996).

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

261265301004 is a wasteful number, since it uses less digits than its factorization.

261265301004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690782 (or 7690780 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 261265301004 its reverse (400103562162), we get a palindrome (661368863166).

The spelling of 261265301004 in words is "two hundred sixty-one billion, two hundred sixty-five million, three hundred one thousand, four".