155601101155 has 16 divisors (see below), whose sum is σ = 190050029568. Its totient is φ = 122274684000.

The previous prime is 155601101101. The next prime is 155601101189. The reversal of 155601101155 is 551101106551.

It is not a de Polignac number, because 155601101155 - 2²¹ = 155599004003 is a prime.

It is a Duffinian 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, 712491 + ... + 904900.

It is an arithmetic number, because the mean of its divisors is an integer number (11878126848).

Almost surely, 2^155601101155 is an apocalyptic number.

155601101155 is a deficient number, since it is larger than the sum of its proper divisors (34448928413).

155601101155 is a wasteful number, since it uses less digits than its factorization.

155601101155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617738.

The product of its (nonzero) digits is 3750, while the sum is 31.

The spelling of 155601101155 in words is "one hundred fifty-five billion, six hundred one million, one hundred one thousand, one hundred fifty-five".