787406347381 has 8 divisors (see below), whose sum is σ = 799173495200. Its totient is φ = 775639635408.

The previous prime is 787406347373. The next prime is 787406347391. The reversal of 787406347381 is 183743604787.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 787406347381 - 2³ = 787406347373 is a prime.

It is a super-2 number, since 2×787406347381² (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 (787406347391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6526255 + ... + 6645811.

It is an arithmetic number, because the mean of its divisors is an integer number (99896686900).

Almost surely, 2^787406347381 is an apocalyptic number.

It is an amenable number.

787406347381 is a deficient number, since it is larger than the sum of its proper divisors (11767147819).

787406347381 is a wasteful number, since it uses less digits than its factorization.

787406347381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217923.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 787406347381 in words is "seven hundred eighty-seven billion, four hundred six million, three hundred forty-seven thousand, three hundred eighty-one".