1101642774555 has 32 divisors (see below), whose sum is σ = 1784477392128. Its totient is φ = 580293014400.

The previous prime is 1101642774541. The next prime is 1101642774569. The reversal of 1101642774555 is 5554772461011.

It is an interprime number because it is at equal distance from previous prime (1101642774541) and next prime (1101642774569).

It is not a de Polignac number, because 1101642774555 - 2⁴ = 1101642774539 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505576 + ... + 1568085.

It is an arithmetic number, because the mean of its divisors is an integer number (55764918504).

Almost surely, 2^{1101642774555} is an apocalyptic number.

1101642774555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1101642774555 is a deficient number, since it is larger than the sum of its proper divisors (682834617573).

1101642774555 is a wasteful number, since it uses less digits than its factorization.

1101642774555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074107.

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 1101642774555 in words is "one trillion, one hundred one billion, six hundred forty-two million, seven hundred seventy-four thousand, five hundred fifty-five".