155727390478 has 32 divisors (see below), whose sum is σ = 270750250080. Its totient is φ = 66621297280.

The previous prime is 155727390457. The next prime is 155727390491. The reversal of 155727390478 is 874093727551.

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, 612301 + ... + 828472.

It is an arithmetic number, because the mean of its divisors is an integer number (8460945315).

Almost surely, 2^155727390478 is an apocalyptic number.

155727390478 is a deficient number, since it is larger than the sum of its proper divisors (115022859602).

155727390478 is a wasteful number, since it uses less digits than its factorization.

155727390478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440837 (or 1440803 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 58.

The spelling of 155727390478 in words is "one hundred fifty-five billion, seven hundred twenty-seven million, three hundred ninety thousand, four hundred seventy-eight".