16870415616 has 180 divisors, whose sum is σ = 51059545152. Its totient is φ = 5539083264.

The previous prime is 16870415599. The next prime is 16870415633. The reversal of 16870415616 is 61651407861.

16870415616 is a `hidden beast` number, since 1 + 6 + 87 + 0 + 4 + 1 + 561 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16870415599) and next prime (16870415633).

It is a super-2 number, since 2×16870415616² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1383241 + ... + 1395383.

Almost surely, 2^16870415616 is an apocalyptic number.

16870415616 is a gapful number since it is divisible by the number (16) 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 16870415616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25529772576).

16870415616 is an abundant number, since it is smaller than the sum of its proper divisors (34189129536).

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

16870415616 is an equidigital number, since it uses as much as digits as its factorization.

16870415616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12238 (or 12215 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16870415616 in words is "sixteen billion, eight hundred seventy million, four hundred fifteen thousand, six hundred sixteen".