101556150101661 has 16 divisors (see below), whose sum is σ = 137322778854528. Its totient is φ = 66746913777600.

The previous prime is 101556150101641. The next prime is 101556150101689. The reversal of 101556150101661 is 166101051655101.

It is not a de Polignac number, because 101556150101661 - 2¹⁰ = 101556150100637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101556150101641) 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, 8930250 + ... + 16818491.

It is an arithmetic number, because the mean of its divisors is an integer number (8582673678408).

Almost surely, 2^{101556150101661} is an apocalyptic number.

It is an amenable number.

101556150101661 is a deficient number, since it is larger than the sum of its proper divisors (35766628752867).

101556150101661 is a wasteful number, since it uses less digits than its factorization.

101556150101661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25767332.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 101556150101661 in words is "one hundred one trillion, five hundred fifty-six billion, one hundred fifty million, one hundred one thousand, six hundred sixty-one".