361620422020 has 192 divisors, whose sum is σ = 898975832832. Its totient is φ = 120460032000.

The previous prime is 361620422017. The next prime is 361620422021. The reversal of 361620422020 is 20224026163.

It is a self number, because there is not a number n which added to its sum of digits gives 361620422020.

It is not an unprimeable number, because it can be changed into a prime (361620422021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 372420135 + ... + 372421105.

It is an arithmetic number, because the mean of its divisors is an integer number (4682165796).

Almost surely, 2^361620422020 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 361620422020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449487916416).

361620422020 is an abundant number, since it is smaller than the sum of its proper divisors (537355410812).

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

361620422020 is a wasteful number, since it uses less digits than its factorization.

361620422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 361620422020 its reverse (20224026163), we get a palindrome (381844448183).

It can be divided in two parts, 3616 and 20422020, that added together give a triangular number (20425636 = T₆₃₉₁).

The spelling of 361620422020 in words is "three hundred sixty-one billion, six hundred twenty million, four hundred twenty-two thousand, twenty".