981306248078 has 16 divisors (see below), whose sum is σ = 1591764565776. Its totient is φ = 451031276160.

The previous prime is 981306248033. The next prime is 981306248089. The reversal of 981306248078 is 870842603189.

981306248078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×981306248078⁴ (a number of 49 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78297776 + ... + 78310307.

It is an arithmetic number, because the mean of its divisors is an integer number (99485285361).

Almost surely, 2^981306248078 is an apocalyptic number.

981306248078 is a deficient number, since it is larger than the sum of its proper divisors (610458317698).

981306248078 is a wasteful number, since it uses less digits than its factorization.

981306248078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156608339.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 981306248078 in words is "nine hundred eighty-one billion, three hundred six million, two hundred forty-eight thousand, seventy-eight".