391371049078 has 16 divisors (see below), whose sum is σ = 587979572256. Its totient is φ = 195377978880.

The previous prime is 391371049061. The next prime is 391371049099. The reversal of 391371049078 is 870940173193.

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 7 ways as a sum of consecutive naturals, for example, 7124758 + ... + 7179478.

It is an arithmetic number, because the mean of its divisors is an integer number (36748723266).

Almost surely, 2^391371049078 is an apocalyptic number.

391371049078 is a deficient number, since it is larger than the sum of its proper divisors (196608523178).

391371049078 is a wasteful number, since it uses less digits than its factorization.

391371049078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60279.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 391371049078 in words is "three hundred ninety-one billion, three hundred seventy-one million, forty-nine thousand, seventy-eight".