391713961716 has 1152 divisors, whose sum is σ = 1419509145600. Its totient is φ = 93274675200.

The previous prime is 391713961693. The next prime is 391713961753. The reversal of 391713961716 is 617169317193.

391713961716 is a `hidden beast` number, since 3 + 9 + 1 + 7 + 1 + 3 + 9 + 617 + 16 = 666.

It is a super-3 number, since 3×391713961716³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 3803048121 + ... + 3803048223.

It is an arithmetic number, because the mean of its divisors is an integer number (1232212800).

Almost surely, 2^391713961716 is an apocalyptic number.

391713961716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391713961716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709754572800).

391713961716 is an abundant number, since it is smaller than the sum of its proper divisors (1027795183884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391713961716 is a wasteful number, since it uses less digits than its factorization.

391713961716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 204 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The spelling of 391713961716 in words is "three hundred ninety-one billion, seven hundred thirteen million, nine hundred sixty-one thousand, seven hundred sixteen".