87767038187615 has 64 divisors (see below), whose sum is σ = 109793816174592. Its totient is φ = 67313163456000.

The previous prime is 87767038187603. The next prime is 87767038187617. The reversal of 87767038187615 is 51678183076778.

It is a happy number.

It is not a de Polignac number, because 87767038187615 - 2¹⁰ = 87767038186591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87767038187617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3267195674 + ... + 3267222536.

It is an arithmetic number, because the mean of its divisors is an integer number (1715528377728).

Almost surely, 2^{87767038187615} is an apocalyptic number.

87767038187615 is a deficient number, since it is larger than the sum of its proper divisors (22026777986977).

87767038187615 is a wasteful number, since it uses less digits than its factorization.

87767038187615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28680.

The product of its (nonzero) digits is 663828480, while the sum is 74.

The spelling of 87767038187615 in words is "eighty-seven trillion, seven hundred sixty-seven billion, thirty-eight million, one hundred eighty-seven thousand, six hundred fifteen".