61624471620 has 192 divisors, whose sum is σ = 184790753280. Its totient is φ = 15314116608.

The previous prime is 61624471603. The next prime is 61624471627. The reversal of 61624471620 is 2617442616.

It is not an unprimeable number, because it can be changed into a prime (61624471627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8172492 + ... + 8180028.

It is an arithmetic number, because the mean of its divisors is an integer number (962451840).

Almost surely, 2^61624471620 is an apocalyptic number.

61624471620 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 61624471620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92395376640).

61624471620 is an abundant number, since it is smaller than the sum of its proper divisors (123166281660).

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

61624471620 is a wasteful number, since it uses less digits than its factorization.

61624471620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742 (or 7740 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 61624471620 in words is "sixty-one billion, six hundred twenty-four million, four hundred seventy-one thousand, six hundred twenty".