73209551340 has 48 divisors (see below), whose sum is σ = 206867374560. Its totient is φ = 19343439360.

The previous prime is 73209551273. The next prime is 73209551341. The reversal of 73209551340 is 4315590237.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (73209551341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5590521 + ... + 5603600.

It is an arithmetic number, because the mean of its divisors is an integer number (4309736970).

Almost surely, 2^73209551340 is an apocalyptic number.

It is an amenable number.

73209551340 is an abundant number, since it is smaller than the sum of its proper divisors (133657823220).

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

73209551340 is a wasteful number, since it uses less digits than its factorization.

73209551340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11194242 (or 11194240 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 73209551340 in words is "seventy-three billion, two hundred nine million, five hundred fifty-one thousand, three hundred forty".