356774221020 has 384 divisors, whose sum is σ = 1220721868800. Its totient is φ = 76044054528.

The previous prime is 356774220931. The next prime is 356774221043. The reversal of 356774221020 is 20122477653.

It is a self number, because there is not a number n which added to its sum of digits gives 356774221020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 272971207 + ... + 272972513.

It is an arithmetic number, because the mean of its divisors is an integer number (3178963200).

Almost surely, 2^356774221020 is an apocalyptic number.

356774221020 is a gapful number since it is divisible by the number (30) 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 356774221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610360934400).

356774221020 is an abundant number, since it is smaller than the sum of its proper divisors (863947647780).

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

356774221020 is a wasteful number, since it uses less digits than its factorization.

356774221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

Adding to 356774221020 its reverse (20122477653), we get a palindrome (376896698673).

The spelling of 356774221020 in words is "three hundred fifty-six billion, seven hundred seventy-four million, two hundred twenty-one thousand, twenty".