72197083954836 has 36 divisors (see below), whose sum is σ = 182817796024864. Its totient is φ = 24023548069200.

The previous prime is 72197083954783. The next prime is 72197083954843. The reversal of 72197083954836 is 63845938079127.

72197083954836 is a `hidden beast` number, since 7 + 2 + 1 + 9 + 70 + 8 + 3 + 9 + 548 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1756086760 + ... + 1756127871.

It is a 1-persistent number, because it is pandigital, but 2⋅72197083954836 = 144394167909672 is not.

Almost surely, 2^{72197083954836} is an apocalyptic number.

It is an amenable number.

72197083954836 is an abundant number, since it is smaller than the sum of its proper divisors (110620712070028).

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

72197083954836 is a wasteful number, since it uses less digits than its factorization.

72197083954836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512215212 (or 3512215207 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 72.

The spelling of 72197083954836 in words is "seventy-two trillion, one hundred ninety-seven billion, eighty-three million, nine hundred fifty-four thousand, eight hundred thirty-six".