40757047021 has 4 divisors (see below), whose sum is σ = 40939814272. Its totient is φ = 40574279772.

The previous prime is 40757046989. The next prime is 40757047031. The reversal of 40757047021 is 12074075704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40757047021 - 2⁵ = 40757046989 is a prime.

It is a super-2 number, since 2×40757047021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40757047031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91383291 + ... + 91383736.

It is an arithmetic number, because the mean of its divisors is an integer number (10234953568).

Almost surely, 2^40757047021 is an apocalyptic number.

It is an amenable number.

40757047021 is a deficient number, since it is larger than the sum of its proper divisors (182767251).

40757047021 is a wasteful number, since it uses less digits than its factorization.

40757047021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182767250.

The product of its (nonzero) digits is 54880, while the sum is 37.

The spelling of 40757047021 in words is "forty billion, seven hundred fifty-seven million, forty-seven thousand, twenty-one".