55161666150015 has 16 divisors (see below), whose sum is σ = 88258856340096. Its totient is φ = 29419491780000.

The previous prime is 55161666150011. The next prime is 55161666150049. The reversal of 55161666150015 is 51005166616155.

It is not a de Polignac number, because 55161666150015 - 2² = 55161666150011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161666150011) 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, 3689040 + ... + 11132490.

It is an arithmetic number, because the mean of its divisors is an integer number (5516178521256).

Almost surely, 2^{55161666150015} is an apocalyptic number.

55161666150015 is a deficient number, since it is larger than the sum of its proper divisors (33097190190081).

55161666150015 is a wasteful number, since it uses less digits than its factorization.

55161666150015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937510.

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 55161666150015 in words is "fifty-five trillion, one hundred sixty-one billion, six hundred sixty-six million, one hundred fifty thousand, fifteen".