3621842807156 has 96 divisors (see below), whose sum is σ = 7436606994432. Its totient is φ = 1511123402880.

The previous prime is 3621842807101. The next prime is 3621842807159. The reversal of 3621842807156 is 6517082481263.

It is a junction number, because it is equal to n+sod(n) for n = 3621842807098 and 3621842807107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621842807159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692907815 + ... + 692913041.

It is an arithmetic number, because the mean of its divisors is an integer number (77464656192).

Almost surely, 2^{3621842807156} 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 3621842807156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3718303497216).

3621842807156 is an abundant number, since it is smaller than the sum of its proper divisors (3814764187276).

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

3621842807156 is a wasteful number, since it uses less digits than its factorization.

3621842807156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7069 (or 7067 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 3621842807156 in words is "three trillion, six hundred twenty-one billion, eight hundred forty-two million, eight hundred seven thousand, one hundred fifty-six".