72878714997 has 16 divisors (see below), whose sum is σ = 106640174592. Its totient is φ = 43904430320.

The previous prime is 72878714969. The next prime is 72878715071. The reversal of 72878714997 is 79941787827.

It is a cyclic number.

It is not a de Polignac number, because 72878714997 - 2¹⁵ = 72878682229 is a prime.

It is a super-2 number, since 2×72878714997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72878714197) 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, 6606603 + ... + 6617624.

It is an arithmetic number, because the mean of its divisors is an integer number (6665010912).

Almost surely, 2^72878714997 is an apocalyptic number.

It is an amenable number.

72878714997 is a deficient number, since it is larger than the sum of its proper divisors (33761459595).

72878714997 is a wasteful number, since it uses less digits than its factorization.

72878714997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224408.

The product of its digits is 99574272, while the sum is 69.

The spelling of 72878714997 in words is "seventy-two billion, eight hundred seventy-eight million, seven hundred fourteen thousand, nine hundred ninety-seven".