4072991593972 has 72 divisors (see below), whose sum is σ = 8586796339968. Its totient is φ = 1683755942400.

The previous prime is 4072991593963. The next prime is 4072991593973. The reversal of 4072991593972 is 2793951992704.

It is a junction number, because it is equal to n+sod(n) for n = 4072991593898 and 4072991593907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4072991593973) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 773572 + ... + 2957092.

Almost surely, 2^{4072991593972} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4072991593972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4293398169984).

4072991593972 is an abundant number, since it is smaller than the sum of its proper divisors (4513804745996).

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

4072991593972 is a wasteful number, since it uses less digits than its factorization.

4072991593972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183877 (or 2183868 counting only the distinct ones).

The product of its (nonzero) digits is 77157360, while the sum is 67.

The spelling of 4072991593972 in words is "four trillion, seventy-two billion, nine hundred ninety-one million, five hundred ninety-three thousand, nine hundred seventy-two".