40661664151 has 4 divisors (see below), whose sum is σ = 40678448112. Its totient is φ = 40644880192.

The previous prime is 40661664139. The next prime is 40661664161. The reversal of 40661664151 is 15146616604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40661664151 - 2¹¹ = 40661662103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661664101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8388346 + ... + 8393191.

It is an arithmetic number, because the mean of its divisors is an integer number (10169612028).

Almost surely, 2^40661664151 is an apocalyptic number.

40661664151 is a deficient number, since it is larger than the sum of its proper divisors (16783961).

40661664151 is a wasteful number, since it uses less digits than its factorization.

40661664151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16783960.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 40661664151 in words is "forty billion, six hundred sixty-one million, six hundred sixty-four thousand, one hundred fifty-one".