615981786696 has 192 divisors, whose sum is σ = 1802590433280. Its totient is φ = 196844696640.

The previous prime is 615981786683. The next prime is 615981786709. The reversal of 615981786696 is 696687189516.

It is an interprime number because it is at equal distance from previous prime (615981786683) and next prime (615981786709).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6400485 + ... + 6496011.

It is an arithmetic number, because the mean of its divisors is an integer number (9388491840).

Almost surely, 2^615981786696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615981786696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901295216640).

615981786696 is an abundant number, since it is smaller than the sum of its proper divisors (1186608646584).

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

615981786696 is a wasteful number, since it uses less digits than its factorization.

615981786696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95686 (or 95670 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The spelling of 615981786696 in words is "six hundred fifteen billion, nine hundred eighty-one million, seven hundred eighty-six thousand, six hundred ninety-six".