261190315519 has 32 divisors (see below), whose sum is σ = 326335758336. Its totient is φ = 203862389760.

The previous prime is 261190315501. The next prime is 261190315523. The reversal of 261190315519 is 915513091162.

It is not a de Polignac number, because 261190315519 - 2¹⁵ = 261190282751 is a prime.

It is a super-2 number, since 2×261190315519² (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 (261190315219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27969019 + ... + 27978355.

It is an arithmetic number, because the mean of its divisors is an integer number (10197992448).

Almost surely, 2^261190315519 is an apocalyptic number.

261190315519 is a deficient number, since it is larger than the sum of its proper divisors (65145442817).

261190315519 is a wasteful number, since it uses less digits than its factorization.

261190315519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16975.

The product of its (nonzero) digits is 72900, while the sum is 43.

The spelling of 261190315519 in words is "two hundred sixty-one billion, one hundred ninety million, three hundred fifteen thousand, five hundred nineteen".