787399679231 has 16 divisors (see below), whose sum is σ = 860877504000. Its totient is φ = 714238452480.

The previous prime is 787399679191. The next prime is 787399679237. The reversal of 787399679231 is 132976993787.

It is a cyclic number.

It is not a de Polignac number, because 787399679231 - 2⁶ = 787399679167 is a prime.

It is a super-2 number, since 2×787399679231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787399679237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34497935 + ... + 34520751.

It is an arithmetic number, because the mean of its divisors is an integer number (53804844000).

Almost surely, 2^787399679231 is an apocalyptic number.

787399679231 is a deficient number, since it is larger than the sum of its proper divisors (73477824769).

787399679231 is a wasteful number, since it uses less digits than its factorization.

787399679231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29614.

The product of its digits is 216040608, while the sum is 71.

The spelling of 787399679231 in words is "seven hundred eighty-seven billion, three hundred ninety-nine million, six hundred seventy-nine thousand, two hundred thirty-one".