166741419957 has 16 divisors (see below), whose sum is σ = 269028173952. Its totient is φ = 89676057600.

The previous prime is 166741419953. The next prime is 166741419983. The reversal of 166741419957 is 759914147661.

It is a happy number.

It is not a de Polignac number, because 166741419957 - 2² = 166741419953 is a prime.

It is a super-2 number, since 2×166741419957² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166741419957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166741419953) 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, 233531044 + ... + 233531757.

It is an arithmetic number, because the mean of its divisors is an integer number (16814260872).

Almost surely, 2^166741419957 is an apocalyptic number.

166741419957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

166741419957 is a deficient number, since it is larger than the sum of its proper divisors (102286753995).

166741419957 is a wasteful number, since it uses less digits than its factorization.

166741419957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467062828.

The product of its digits is 11430720, while the sum is 60.

The spelling of 166741419957 in words is "one hundred sixty-six billion, seven hundred forty-one million, four hundred nineteen thousand, nine hundred fifty-seven".