1611061015155 has 16 divisors (see below), whose sum is σ = 2577774407424. Its totient is φ = 859206947040.

The previous prime is 1611061015129. The next prime is 1611061015169. The reversal of 1611061015155 is 5515101601161.

It is not a de Polignac number, because 1611061015155 - 2⁷ = 1611061015027 is a prime.

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, 1073719 + ... + 2091648.

It is an arithmetic number, because the mean of its divisors is an integer number (161110900464).

Almost surely, 2^{1611061015155} is an apocalyptic number.

1611061015155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1611061015155 is a deficient number, since it is larger than the sum of its proper divisors (966713392269).

1611061015155 is a wasteful number, since it uses less digits than its factorization.

1611061015155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199306.

The product of its (nonzero) digits is 4500, while the sum is 33.

The spelling of 1611061015155 in words is "one trillion, six hundred eleven billion, sixty-one million, fifteen thousand, one hundred fifty-five".