3639511227072 has 448 divisors, whose sum is σ = 11423416320000. Its totient is φ = 1022052455424.

The previous prime is 3639511227061. The next prime is 3639511227091. The reversal of 3639511227072 is 2707221159363.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1243425673 + ... + 1243428599.

Almost surely, 2^{3639511227072} is an apocalyptic number.

3639511227072 is a gapful number since it is divisible by the number (32) 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 3639511227072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5711708160000).

3639511227072 is an abundant number, since it is smaller than the sum of its proper divisors (7783905092928).

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

3639511227072 is a wasteful number, since it uses less digits than its factorization.

3639511227072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281 (or 3257 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 3639511227072 in words is "three trillion, six hundred thirty-nine billion, five hundred eleven million, two hundred twenty-seven thousand, seventy-two".