40153787881 has 4 divisors (see below), whose sum is σ = 40170528000. Its totient is φ = 40137047764.

The previous prime is 40153787879. The next prime is 40153787909. The reversal of 40153787881 is 18878735104.

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 40153787881 - 2¹ = 40153787879 is a prime.

It is a super-2 number, since 2×40153787881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40153787801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8366461 + ... + 8371258.

It is an arithmetic number, because the mean of its divisors is an integer number (10042632000).

Almost surely, 2^40153787881 is an apocalyptic number.

It is an amenable number.

40153787881 is a deficient number, since it is larger than the sum of its proper divisors (16740119).

40153787881 is a wasteful number, since it uses less digits than its factorization.

40153787881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740118.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 40153787881 in words is "forty billion, one hundred fifty-three million, seven hundred eighty-seven thousand, eight hundred eighty-one".