40056043001 has 16 divisors (see below), whose sum is σ = 45582620160. Its totient is φ = 34919501760.

The previous prime is 40056042977. The next prime is 40056043007. The reversal of 40056043001 is 10034065004.

It is a happy number.

It is not a de Polignac number, because 40056043001 - 2¹⁸ = 40055780857 is a prime.

It is a super-2 number, since 2×40056043001² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40056043007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824270 + ... + 871511.

It is an arithmetic number, because the mean of its divisors is an integer number (2848913760).

Almost surely, 2^40056043001 is an apocalyptic number.

It is an amenable number.

40056043001 is a deficient number, since it is larger than the sum of its proper divisors (5526577159).

40056043001 is a wasteful number, since it uses less digits than its factorization.

40056043001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695896.

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 40056043001 in words is "forty billion, fifty-six million, forty-three thousand, one".