72150072078 has 32 divisors (see below), whose sum is σ = 164922992640. Its totient is φ = 20613238560.

The previous prime is 72150072053. The next prime is 72150072121. The reversal of 72150072078 is 87027005127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159068 + ... + 1219728.

It is an arithmetic number, because the mean of its divisors is an integer number (5153843520).

Almost surely, 2^72150072078 is an apocalyptic number.

72150072078 is an abundant number, since it is smaller than the sum of its proper divisors (92772920562).

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

72150072078 is a wasteful number, since it uses less digits than its factorization.

72150072078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88992.

The product of its (nonzero) digits is 54880, while the sum is 39.

The spelling of 72150072078 in words is "seventy-two billion, one hundred fifty million, seventy-two thousand, seventy-eight".