73908771380 has 24 divisors (see below), whose sum is σ = 155704306632. Its totient is φ = 29469053952.

The previous prime is 73908771353. The next prime is 73908771421. The reversal of 73908771380 is 8317780937.

It can be written as a sum of positive squares in 4 ways, for example, as 7012052644 + 66896718736 = 83738^2 + 258644^2 .

It is a super-2 number, since 2×73908771380² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5896997 + ... + 5909516.

It is an arithmetic number, because the mean of its divisors is an integer number (6487679443).

Almost surely, 2^73908771380 is an apocalyptic number.

It is an amenable number.

73908771380 is an abundant number, since it is smaller than the sum of its proper divisors (81795535252).

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

73908771380 is a wasteful number, since it uses less digits than its factorization.

73908771380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806835 (or 11806833 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 73908771380 in words is "seventy-three billion, nine hundred eight million, seven hundred seventy-one thousand, three hundred eighty".