101161615506 has 128 divisors (see below), whose sum is σ = 240789749760. Its totient is φ = 27736564800.

The previous prime is 101161615481. The next prime is 101161615519. The reversal of 101161615506 is 605516161101.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26767525 + ... + 26771303.

It is an arithmetic number, because the mean of its divisors is an integer number (1881169920).

Almost surely, 2^101161615506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101161615506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120394874880).

101161615506 is an abundant number, since it is smaller than the sum of its proper divisors (139628134254).

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

101161615506 is a wasteful number, since it uses less digits than its factorization.

101161615506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 101161615506 its reverse (605516161101), we get a palindrome (706677776607).

The spelling of 101161615506 in words is "one hundred one billion, one hundred sixty-one million, six hundred fifteen thousand, five hundred six".