40153787897 has 8 divisors (see below), whose sum is σ = 40707897576. Its totient is φ = 39599788032.

The previous prime is 40153787879. The next prime is 40153787909. The reversal of 40153787897 is 79878735104.

It can be written as a sum of positive squares in 4 ways, for example, as 19331009296 + 20822778601 = 139036^2 + 144301^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40153787897 - 2²² = 40149593593 is a prime.

It is a super-2 number, since 2×40153787897² (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 (40153787197) 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, 944033 + ... + 985649.

It is an arithmetic number, because the mean of its divisors is an integer number (5088487197).

Almost surely, 2^40153787897 is an apocalyptic number.

It is an amenable number.

40153787897 is a deficient number, since it is larger than the sum of its proper divisors (554109679).

40153787897 is a wasteful number, since it uses less digits than its factorization.

40153787897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54907.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 40153787897 in words is "forty billion, one hundred fifty-three million, seven hundred eighty-seven thousand, eight hundred ninety-seven".