621152890848 has 576 divisors, whose sum is σ = 2225741027328. Its totient is φ = 166349168640.

The previous prime is 621152890789. The next prime is 621152890849. The reversal of 621152890848 is 848098251126.

621152890848 is a `hidden beast` number, since 6 + 21 + 1 + 528 + 90 + 8 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 621152890794 and 621152890803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621152890849) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 250766986 + ... + 250769462.

It is an arithmetic number, because the mean of its divisors is an integer number (3864133728).

Almost surely, 2^621152890848 is an apocalyptic number.

621152890848 is a gapful number since it is divisible by the number (68) 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 621152890848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1112870513664).

621152890848 is an abundant number, since it is smaller than the sum of its proper divisors (1604588136480).

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

621152890848 is a wasteful number, since it uses less digits than its factorization.

621152890848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 621152890848 in words is "six hundred twenty-one billion, one hundred fifty-two million, eight hundred ninety thousand, eight hundred forty-eight".