155500665001 has 16 divisors (see below), whose sum is σ = 171303061248. Its totient is φ = 139977176400.

The previous prime is 155500664999. The next prime is 155500665029. The reversal of 155500665001 is 100566005551.

It is a cyclic number.

It is not a de Polignac number, because 155500665001 - 2¹ = 155500664999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155500663001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2562946 + ... + 2622916.

It is an arithmetic number, because the mean of its divisors is an integer number (10706441328).

Almost surely, 2^155500665001 is an apocalyptic number.

155500665001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155500665001 is a deficient number, since it is larger than the sum of its proper divisors (15802396247).

155500665001 is a wasteful number, since it uses less digits than its factorization.

155500665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62292.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 155500665001 in words is "one hundred fifty-five billion, five hundred million, six hundred sixty-five thousand, one".