73640617356 has 48 divisors (see below), whose sum is σ = 179334215424. Its totient is φ = 23474991936.

The previous prime is 73640617343. The next prime is 73640617367. The reversal of 73640617356 is 65371604637.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547835 + ... + 1594701.

It is an arithmetic number, because the mean of its divisors is an integer number (3736129488).

Almost surely, 2^73640617356 is an apocalyptic number.

It is an amenable number.

73640617356 is an abundant number, since it is smaller than the sum of its proper divisors (105693598068).

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

73640617356 is a wasteful number, since it uses less digits than its factorization.

73640617356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52590 (or 52588 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 73640617356 in words is "seventy-three billion, six hundred forty million, six hundred seventeen thousand, three hundred fifty-six".