87051566781418 has 16 divisors (see below), whose sum is σ = 131328676654560. Its totient is φ = 43275639200976.

The previous prime is 87051566781281. The next prime is 87051566781427. The reversal of 87051566781418 is 81418766515078.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73907628 + ... + 75076231.

It is an arithmetic number, because the mean of its divisors is an integer number (8208042290910).

Almost surely, 2^{87051566781418} is an apocalyptic number.

87051566781418 is a deficient number, since it is larger than the sum of its proper divisors (44277109873142).

87051566781418 is a wasteful number, since it uses less digits than its factorization.

87051566781418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148985541.

The product of its (nonzero) digits is 90316800, while the sum is 67.

The spelling of 87051566781418 in words is "eighty-seven trillion, fifty-one billion, five hundred sixty-six million, seven hundred eighty-one thousand, four hundred eighteen".