261470840000 has 70 divisors (see below), whose sum is σ = 648362804364. Its totient is φ = 104588320000.

The previous prime is 261470839963. The next prime is 261470840009. The reversal of 261470840000 is 48074162.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (261470840009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3228386 + ... + 3308385.

Almost surely, 2^261470840000 is an apocalyptic number.

261470840000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261470840000 is an abundant number, since it is smaller than the sum of its proper divisors (386891964364).

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

261470840000 is an frugal number, since it uses more digits than its factorization.

261470840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536803 (or 6536778 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 261470840000 in words is "two hundred sixty-one billion, four hundred seventy million, eight hundred forty thousand".