139490156078 has 64 divisors (see below), whose sum is σ = 280421568000. Its totient is φ = 50475809664.

The previous prime is 139490156027. The next prime is 139490156081. The reversal of 139490156078 is 870651094931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595208 + ... + 795771.

It is an arithmetic number, because the mean of its divisors is an integer number (4381587000).

Almost surely, 2^139490156078 is an apocalyptic number.

139490156078 is an abundant number, since it is smaller than the sum of its proper divisors (140931411922).

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

139490156078 is a wasteful number, since it uses less digits than its factorization.

139490156078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391049.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 139490156078 in words is "one hundred thirty-nine billion, four hundred ninety million, one hundred fifty-six thousand, seventy-eight".