72978541926078 has 16 divisors (see below), whose sum is σ = 145965849716736. Its totient is φ = 24324719664600.

The previous prime is 72978541926077. The next prime is 72978541926097. The reversal of 72978541926078 is 87062914587927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72978541926077) 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 7 ways as a sum of consecutive naturals, for example, 365136126 + ... + 365335937.

It is an arithmetic number, because the mean of its divisors is an integer number (9122865607296).

Almost surely, 2^{72978541926078} is an apocalyptic number.

72978541926078 is an abundant number, since it is smaller than the sum of its proper divisors (72987307790658).

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

72978541926078 is a wasteful number, since it uses less digits than its factorization.

72978541926078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730488719.

The product of its (nonzero) digits is 853493760, while the sum is 75.

The spelling of 72978541926078 in words is "seventy-two trillion, nine hundred seventy-eight billion, five hundred forty-one million, nine hundred twenty-six thousand, seventy-eight".