621461430012 has 12 divisors (see below), whose sum is σ = 1450076670056. Its totient is φ = 207153810000.

The previous prime is 621461430001. The next prime is 621461430127. The reversal of 621461430012 is 210034164126.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25894226239 + ... + 25894226262.

Almost surely, 2^621461430012 is an apocalyptic number.

It is an amenable number.

621461430012 is an abundant number, since it is smaller than the sum of its proper divisors (828615240044).

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

621461430012 is a wasteful number, since it uses less digits than its factorization.

621461430012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51788452508 (or 51788452506 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 621461430012 its reverse (210034164126), we get a palindrome (831495594138).

The spelling of 621461430012 in words is "six hundred twenty-one billion, four hundred sixty-one million, four hundred thirty thousand, twelve".