73070372821530 has 256 divisors, whose sum is σ = 211591064678400. Its totient is φ = 15776228321280.

The previous prime is 73070372821513. The next prime is 73070372821553. The reversal of 73070372821530 is 3512827307037.

It is a self number, because there is not a number n which added to its sum of digits gives 73070372821530.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3213426901 + ... + 3213449639.

It is an arithmetic number, because the mean of its divisors is an integer number (826527596400).

Almost surely, 2^{73070372821530} is an apocalyptic number.

73070372821530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 73070372821530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105795532339200).

73070372821530 is an abundant number, since it is smaller than the sum of its proper divisors (138520691856870).

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

73070372821530 is a wasteful number, since it uses less digits than its factorization.

73070372821530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25109.

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 73070372821530 in words is "seventy-three trillion, seventy billion, three hundred seventy-two million, eight hundred twenty-one thousand, five hundred thirty".