139649472078 has 8 divisors (see below), whose sum is σ = 279298944168. Its totient is φ = 46549824024.

The previous prime is 139649472043. The next prime is 139649472089. The reversal of 139649472078 is 870274946931.

It is a sphenic number, since it is the product of 3 distinct primes.

139649472078 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11637456001 + ... + 11637456012.

It is an arithmetic number, because the mean of its divisors is an integer number (34912368021).

Almost surely, 2^139649472078 is an apocalyptic number.

139649472078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139649472078 is a wasteful number, since it uses less digits than its factorization.

139649472078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23274912018.

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 139649472078 in words is "one hundred thirty-nine billion, six hundred forty-nine million, four hundred seventy-two thousand, seventy-eight".