261250015151536 has 160 divisors (see below), whose sum is σ = 513997877405376. Its totient is φ = 128627896320000.

The previous prime is 261250015151497. The next prime is 261250015151557. The reversal of 261250015151536 is 635151510052162.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 261250015151492 and 261250015151501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111980288226 + ... + 111980290558.

Almost surely, 2^{261250015151536} is an apocalyptic number.

It is an amenable number.

261250015151536 is a deficient number, since it is larger than the sum of its proper divisors (252747862253840).

261250015151536 is a wasteful number, since it uses less digits than its factorization.

261250015151536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591 (or 3585 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 261250015151536 in words is "two hundred sixty-one trillion, two hundred fifty billion, fifteen million, one hundred fifty-one thousand, five hundred thirty-six".