621461590620 has 96 divisors (see below), whose sum is σ = 1875662789952. Its totient is φ = 152834992128.

The previous prime is 621461590619. The next prime is 621461590637. The reversal of 621461590620 is 26095164126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488064 + ... + 1217016.

It is an arithmetic number, because the mean of its divisors is an integer number (19538154062).

Almost surely, 2^621461590620 is an apocalyptic number.

621461590620 is a gapful number since it is divisible by the number (60) 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 621461590620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937831394976).

621461590620 is an abundant number, since it is smaller than the sum of its proper divisors (1254201199332).

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

621461590620 is a wasteful number, since it uses less digits than its factorization.

621461590620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730071 (or 730069 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 621461590620 in words is "six hundred twenty-one billion, four hundred sixty-one million, five hundred ninety thousand, six hundred twenty".