40115662021 has 8 divisors (see below), whose sum is σ = 41116860288. Its totient is φ = 39115548000.

The previous prime is 40115662009. The next prime is 40115662043. The reversal of 40115662021 is 12026651104.

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

It is a cyclic number.

It is not a de Polignac number, because 40115662021 - 2¹³ = 40115653829 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 (40115662051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195885 + ... + 344386.

It is an arithmetic number, because the mean of its divisors is an integer number (5139607536).

Almost surely, 2^40115662021 is an apocalyptic number.

40115662021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40115662021 is a deficient number, since it is larger than the sum of its proper divisors (1001198267).

40115662021 is a wasteful number, since it uses less digits than its factorization.

40115662021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542123.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 40115662021 in words is "forty billion, one hundred fifteen million, six hundred sixty-two thousand, twenty-one".