787951593643 has 4 divisors (see below), whose sum is σ = 822210358608. Its totient is φ = 753692828680.

The previous prime is 787951593641. The next prime is 787951593679. The reversal of 787951593643 is 346395159787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346395159787 = 239 ⋅1449352133.

It is a cyclic number.

It is not a de Polignac number, because 787951593643 - 2¹ = 787951593641 is a prime.

It is a super-2 number, since 2×787951593643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787951593641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17129382448 + ... + 17129382493.

It is an arithmetic number, because the mean of its divisors is an integer number (205552589652).

Almost surely, 2^787951593643 is an apocalyptic number.

787951593643 is a deficient number, since it is larger than the sum of its proper divisors (34258764965).

787951593643 is a wasteful number, since it uses less digits than its factorization.

787951593643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34258764964.

The product of its digits is 171460800, while the sum is 67.

The spelling of 787951593643 in words is "seven hundred eighty-seven billion, nine hundred fifty-one million, five hundred ninety-three thousand, six hundred forty-three".