87643378292 has 12 divisors (see below), whose sum is σ = 155975504160. Its totient is φ = 43078948536.

The previous prime is 87643378283. The next prime is 87643378313. The reversal of 87643378292 is 29287334678.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185684888 + ... + 185685359.

It is an arithmetic number, because the mean of its divisors is an integer number (12997958680).

Almost surely, 2^87643378292 is an apocalyptic number.

It is an amenable number.

87643378292 is a deficient number, since it is larger than the sum of its proper divisors (68332125868).

87643378292 is a wasteful number, since it uses less digits than its factorization.

87643378292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371370310 (or 371370308 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 59.

The spelling of 87643378292 in words is "eighty-seven billion, six hundred forty-three million, three hundred seventy-eight thousand, two hundred ninety-two".