40157534397 has 8 divisors (see below), whose sum is σ = 53560725120. Its totient is φ = 26763016640.

The previous prime is 40157534381. The next prime is 40157534401. The reversal of 40157534397 is 79343575104.

It is a happy number.

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 40157534397 - 2⁴ = 40157534381 is a prime.

It is a super-2 number, since 2×40157534397² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40157534377) 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 7 ways as a sum of consecutive naturals, for example, 2157429 + ... + 2175962.

It is an arithmetic number, because the mean of its divisors is an integer number (6695090640).

Almost surely, 2^40157534397 is an apocalyptic number.

It is an amenable number.

40157534397 is a deficient number, since it is larger than the sum of its proper divisors (13403190723).

40157534397 is a wasteful number, since it uses less digits than its factorization.

40157534397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336483.

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 40157534397 in words is "forty billion, one hundred fifty-seven million, five hundred thirty-four thousand, three hundred ninety-seven".