166110051501 has 6 divisors (see below), whose sum is σ = 239936741070. Its totient is φ = 110740034328.

The previous prime is 166110051493. The next prime is 166110051509. The reversal of 166110051501 is 105150011661.

166110051501 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 100 + 51 + 501 = 666.

It is an interprime number because it is at equal distance from previous prime (166110051493) and next prime (166110051509).

It can be written as a sum of positive squares in only one way, i.e., 160561291401 + 5548760100 = 400701^2 + 74490^2 .

It is not a de Polignac number, because 166110051501 - 2³ = 166110051493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166110051509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9228336186 + ... + 9228336203.

It is an arithmetic number, because the mean of its divisors is an integer number (39989456845).

Almost surely, 2^166110051501 is an apocalyptic number.

It is an amenable number.

166110051501 is a deficient number, since it is larger than the sum of its proper divisors (73826689569).

166110051501 is a wasteful number, since it uses less digits than its factorization.

166110051501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18456672395 (or 18456672392 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 166110051501 in words is "one hundred sixty-six billion, one hundred ten million, fifty-one thousand, five hundred one".