621056041450 has 48 divisors (see below), whose sum is σ = 1244914070400. Its totient is φ = 229148752320.

The previous prime is 621056041427. The next prime is 621056041451. The reversal of 621056041450 is 54140650126.

It is not an unprimeable number, because it can be changed into a prime (621056041451) 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, 567867 + ... + 1250833.

It is an arithmetic number, because the mean of its divisors is an integer number (25935709800).

Almost surely, 2^621056041450 is an apocalyptic number.

621056041450 is an abundant number, since it is smaller than the sum of its proper divisors (623858028950).

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

621056041450 is a wasteful number, since it uses less digits than its factorization.

621056041450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684391 (or 684386 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 621056041450 its reverse (54140650126), we get a palindrome (675196691576).

The spelling of 621056041450 in words is "six hundred twenty-one billion, fifty-six million, forty-one thousand, four hundred fifty".