72087954078 has 16 divisors (see below), whose sum is σ = 164772466560. Its totient is φ = 20596558296.

The previous prime is 72087954077. The next prime is 72087954083. The reversal of 72087954078 is 87045978027.

It is a super-3 number, since 3×72087954078³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72087954077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858189888 + ... + 858189971.

It is an arithmetic number, because the mean of its divisors is an integer number (10298279160).

Almost surely, 2^72087954078 is an apocalyptic number.

72087954078 is an abundant number, since it is smaller than the sum of its proper divisors (92684512482).

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

72087954078 is a wasteful number, since it uses less digits than its factorization.

72087954078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716379871.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The spelling of 72087954078 in words is "seventy-two billion, eighty-seven million, nine hundred fifty-four thousand, seventy-eight".