155928061998 has 48 divisors (see below), whose sum is σ = 342354763296. Its totient is φ = 51285595200.

The previous prime is 155928061979. The next prime is 155928062009. The reversal of 155928061998 is 899160829551.

155928061998 is a `hidden beast` number, since 1 + 5 + 5 + 9 + 2 + 8 + 0 + 619 + 9 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386311 + ... + 679037.

It is an arithmetic number, because the mean of its divisors is an integer number (7132390902).

Almost surely, 2^155928061998 is an apocalyptic number.

155928061998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

155928061998 is an abundant number, since it is smaller than the sum of its proper divisors (186426701298).

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

155928061998 is a wasteful number, since it uses less digits than its factorization.

155928061998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293129 (or 293126 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 63.

The spelling of 155928061998 in words is "one hundred fifty-five billion, nine hundred twenty-eight million, sixty-one thousand, nine hundred ninety-eight".