87380961261 has 8 divisors (see below), whose sum is σ = 127099580064. Its totient is φ = 52958158320.

The previous prime is 87380961257. The next prime is 87380961281. The reversal of 87380961261 is 16216908378.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87380961261 - 2² = 87380961257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87380961281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323953926 + ... + 1323953991.

It is an arithmetic number, because the mean of its divisors is an integer number (15887447508).

Almost surely, 2^87380961261 is an apocalyptic number.

It is an amenable number.

87380961261 is a deficient number, since it is larger than the sum of its proper divisors (39718618803).

87380961261 is a wasteful number, since it uses less digits than its factorization.

87380961261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647907931.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 87380961261 in words is "eighty-seven billion, three hundred eighty million, nine hundred sixty-one thousand, two hundred sixty-one".