87784633234 has 4 divisors (see below), whose sum is σ = 131676949854. Its totient is φ = 43892316616.

The previous prime is 87784633219. The next prime is 87784633271. The reversal of 87784633234 is 43233648778.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77310134209 + 10474499025 = 278047^2 + 102345^2 .

It is a super-2 number, since 2×87784633234² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21946158307 + ... + 21946158310.

Almost surely, 2^87784633234 is an apocalyptic number.

87784633234 is a deficient number, since it is larger than the sum of its proper divisors (43892316620).

87784633234 is a wasteful number, since it uses less digits than its factorization.

87784633234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43892316619.

The product of its digits is 16257024, while the sum is 55.

The spelling of 87784633234 in words is "eighty-seven billion, seven hundred eighty-four million, six hundred thirty-three thousand, two hundred thirty-four".