166867003537 has 8 divisors (see below), whose sum is σ = 183093548904. Its totient is φ = 151124832768.

The previous prime is 166867003531. The next prime is 166867003543. The reversal of 166867003537 is 735300768661.

It is an interprime number because it is at equal distance from previous prime (166867003531) and next prime (166867003543).

It can be written as a sum of positive squares in 4 ways, for example, as 350775441 + 166516228096 = 18729^2 + 408064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166867003537 - 2²⁷ = 166732785809 is a prime.

It is a super-3 number, since 3×166867003537³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166867003531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121092928 + ... + 121094305.

It is an arithmetic number, because the mean of its divisors is an integer number (22886693613).

Almost surely, 2^166867003537 is an apocalyptic number.

It is an amenable number.

166867003537 is a deficient number, since it is larger than the sum of its proper divisors (16226545367).

166867003537 is a wasteful number, since it uses less digits than its factorization.

166867003537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242187299.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 166867003537 in words is "one hundred sixty-six billion, eight hundred sixty-seven million, three thousand, five hundred thirty-seven".