40046442457 has 4 divisors (see below), whose sum is σ = 45767362816. Its totient is φ = 34325522100.

The previous prime is 40046442437. The next prime is 40046442473. The reversal of 40046442457 is 75424464004.

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 40046442457 - 2¹⁹ = 40045918169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40046442427) 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, 2860460169 + ... + 2860460182.

It is an arithmetic number, because the mean of its divisors is an integer number (11441840704).

Almost surely, 2^40046442457 is an apocalyptic number.

It is an amenable number.

40046442457 is a deficient number, since it is larger than the sum of its proper divisors (5720920359).

40046442457 is an equidigital number, since it uses as much as digits as its factorization.

40046442457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720920358.

The product of its (nonzero) digits is 430080, while the sum is 40.

The spelling of 40046442457 in words is "forty billion, forty-six million, four hundred forty-two thousand, four hundred fifty-seven".