40768597221 has 8 divisors (see below), whose sum is σ = 59299777824. Its totient is φ = 24708240720.

The previous prime is 40768597211. The next prime is 40768597229. The reversal of 40768597221 is 12279586704.

It is a happy number.

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

It is not a de Polignac number, because 40768597221 - 2¹⁴ = 40768580837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40768597229) 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, 617705986 + ... + 617706051.

It is an arithmetic number, because the mean of its divisors is an integer number (7412472228).

Almost surely, 2^40768597221 is an apocalyptic number.

It is an amenable number.

40768597221 is a deficient number, since it is larger than the sum of its proper divisors (18531180603).

40768597221 is a wasteful number, since it uses less digits than its factorization.

40768597221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235412051.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 40768597221 in words is "forty billion, seven hundred sixty-eight million, five hundred ninety-seven thousand, two hundred twenty-one".