261451053007104 has 108 divisors (see below), whose sum is σ = 734391837127536. Its totient is φ = 82563490335744.

The previous prime is 261451053007051. The next prime is 261451053007127. The reversal of 261451053007104 is 401700350154162.

It is a super-2 number, since 2×261451053007104² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471233914 + ... + 471788409.

Almost surely, 2^{261451053007104} is an apocalyptic number.

261451053007104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

261451053007104 is an abundant number, since it is smaller than the sum of its proper divisors (472940784120432).

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

261451053007104 is an equidigital number, since it uses as much as digits as its factorization.

261451053007104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943022380 (or 943022347 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 261451053007104 in words is "two hundred sixty-one trillion, four hundred fifty-one billion, fifty-three million, seven thousand, one hundred four".