40151666 has 8 divisors (see below), whose sum is σ = 60812544. Its totient is φ = 19880820.

The previous prime is 40151659. The next prime is 40151711. The reversal of 40151666 is 66615104.

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

It is a super-2 number, since 2×40151666² = 3224312565151112, which contains 22 as substring.

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, 97250 + ... + 97661.

It is an arithmetic number, because the mean of its divisors is an integer number (7601568).

Almost surely, 2^40151666 is an apocalyptic number.

40151666 is a deficient number, since it is larger than the sum of its proper divisors (20660878).

40151666 is a wasteful number, since it uses less digits than its factorization.

40151666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195016.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40151666 is about 6336.5342262155. The cubic root of 40151666 is about 342.4268861996.

The spelling of 40151666 in words is "forty million, one hundred fifty-one thousand, six hundred sixty-six".