6466156032 has 240 divisors, whose sum is σ = 20429375472. Its totient is φ = 1811496960.

The previous prime is 6466156031. The next prime is 6466156033. The reversal of 6466156032 is 2306516646.

It is an interprime number because it is at equal distance from previous prime (6466156031) and next prime (6466156033).

It is a super-2 number, since 2×6466156032² = 83622347660339970048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466156031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3988182 + ... + 3989802.

Almost surely, 2^6466156032 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 6466156032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10214687736).

6466156032 is an abundant number, since it is smaller than the sum of its proper divisors (13963219440).

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

6466156032 is a wasteful number, since it uses less digits than its factorization.

6466156032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 6466156032 is about 80412.4121762306. The cubic root of 6466156032 is about 1863.0108894539.

The spelling of 6466156032 in words is "six billion, four hundred sixty-six million, one hundred fifty-six thousand, thirty-two".