40215236666 has 32 divisors (see below), whose sum is σ = 67415312448. Its totient is φ = 17833818240.

The previous prime is 40215236647. The next prime is 40215236681. The reversal of 40215236666 is 66663251204.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805406 + ... + 853878.

It is an arithmetic number, because the mean of its divisors is an integer number (2106728514).

Almost surely, 2^40215236666 is an apocalyptic number.

40215236666 is a deficient number, since it is larger than the sum of its proper divisors (27200075782).

40215236666 is a wasteful number, since it uses less digits than its factorization.

40215236666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49406.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 40215236666 in words is "forty billion, two hundred fifteen million, two hundred thirty-six thousand, six hundred sixty-six".