978166474388702 has 32 divisors (see below), whose sum is σ = 1635327508953600. Its totient is φ = 436085867449728.

The previous prime is 978166474388687. The next prime is 978166474388717. The reversal of 978166474388702 is 207883474661879.

It is an interprime number because it is at equal distance from previous prime (978166474388687) and next prime (978166474388717).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608038133 + ... + 609644735.

It is an arithmetic number, because the mean of its divisors is an integer number (51103984654800).

Almost surely, 2^{978166474388702} is an apocalyptic number.

978166474388702 is a deficient number, since it is larger than the sum of its proper divisors (657161034564898).

978166474388702 is a wasteful number, since it uses less digits than its factorization.

978166474388702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549120.

The product of its (nonzero) digits is 5462360064, while the sum is 80.

The spelling of 978166474388702 in words is "nine hundred seventy-eight trillion, one hundred sixty-six billion, four hundred seventy-four million, three hundred eighty-eight thousand, seven hundred two".