166015402212254 has 16 divisors (see below), whose sum is σ = 293778407602176. Its totient is φ = 68854314281400.

The previous prime is 166015402212217. The next prime is 166015402212293. The reversal of 166015402212254 is 452212204510661.

It is a super-2 number, since 2×166015402212254² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191261983682 + ... + 191261984549.

It is an arithmetic number, because the mean of its divisors is an integer number (18361150475136).

Almost surely, 2^{166015402212254} is an apocalyptic number.

166015402212254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166015402212254 is a deficient number, since it is larger than the sum of its proper divisors (127763005389922).

166015402212254 is a wasteful number, since it uses less digits than its factorization.

166015402212254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382523968271.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 166015402212254 in words is "one hundred sixty-six trillion, fifteen billion, four hundred two million, two hundred twelve thousand, two hundred fifty-four".