83633991480 has 256 divisors, whose sum is σ = 304028928000. Its totient is φ = 20325966336.

The previous prime is 83633991451. The next prime is 83633991481. The reversal of 83633991480 is 8419933638.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83633991481) 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, 1071459 + ... + 1146861.

It is an arithmetic number, because the mean of its divisors is an integer number (1187613000).

Almost surely, 2^83633991480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83633991480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152014464000).

83633991480 is an abundant number, since it is smaller than the sum of its proper divisors (220394936520).

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

83633991480 is a wasteful number, since it uses less digits than its factorization.

83633991480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75515 (or 75505 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 83633991480 in words is "eighty-three billion, six hundred thirty-three million, nine hundred ninety-one thousand, four hundred eighty".