166870253436 has 12 divisors (see below), whose sum is σ = 389363924712. Its totient is φ = 55623417808.

The previous prime is 166870253411. The next prime is 166870253441. The reversal of 166870253436 is 634352078661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6952927215 + ... + 6952927238.

It is an arithmetic number, because the mean of its divisors is an integer number (32446993726).

Almost surely, 2^166870253436 is an apocalyptic number.

It is an amenable number.

166870253436 is an abundant number, since it is smaller than the sum of its proper divisors (222493671276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166870253436 is a wasteful number, since it uses less digits than its factorization.

166870253436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13905854460 (or 13905854458 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 166870253436 in words is "one hundred sixty-six billion, eight hundred seventy million, two hundred fifty-three thousand, four hundred thirty-six".