87158019790 has 16 divisors (see below), whose sum is σ = 156889036080. Its totient is φ = 34862185600.

The previous prime is 87158019787. The next prime is 87158019827. The reversal of 87158019790 is 9791085178.

It is a congruent number.

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, 297765 + ... + 512815.

It is an arithmetic number, because the mean of its divisors is an integer number (9805564755).

Almost surely, 2^87158019790 is an apocalyptic number.

87158019790 is a deficient number, since it is larger than the sum of its proper divisors (69731016290).

87158019790 is a wasteful number, since it uses less digits than its factorization.

87158019790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255587.

The product of its (nonzero) digits is 1270080, while the sum is 55.

The spelling of 87158019790 in words is "eighty-seven billion, one hundred fifty-eight million, nineteen thousand, seven hundred ninety".