72879691701839 has 16 divisors (see below), whose sum is σ = 83391222352896. Its totient is φ = 63092043194400.

The previous prime is 72879691701793. The next prime is 72879691701851. The reversal of 72879691701839 is 93810719697827.

It is not a de Polignac number, because 72879691701839 - 2¹⁶ = 72879691636303 is a prime.

It is a super-2 number, since 2×72879691701839² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72879691701839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72899691701839) 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, 1904933867 + ... + 1904972124.

It is an arithmetic number, because the mean of its divisors is an integer number (5211951397056).

Almost surely, 2^{72879691701839} is an apocalyptic number.

72879691701839 is a deficient number, since it is larger than the sum of its proper divisors (10511530651057).

72879691701839 is a wasteful number, since it uses less digits than its factorization.

72879691701839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809906086.

The product of its (nonzero) digits is 576108288, while the sum is 77.

The spelling of 72879691701839 in words is "seventy-two trillion, eight hundred seventy-nine billion, six hundred ninety-one million, seven hundred one thousand, eight hundred thirty-nine".