40156814197 has 4 divisors (see below), whose sum is σ = 42518979756. Its totient is φ = 37794648640.

The previous prime is 40156814161. The next prime is 40156814219. The reversal of 40156814197 is 79141865104.

40156814197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24423125841 + 15733688356 = 156279^2 + 125434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40156814197 is a prime.

It is a super-2 number, since 2×40156814197² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40156814497) 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, 1181082754 + ... + 1181082787.

It is an arithmetic number, because the mean of its divisors is an integer number (10629744939).

Almost surely, 2^40156814197 is an apocalyptic number.

It is an amenable number.

40156814197 is a deficient number, since it is larger than the sum of its proper divisors (2362165559).

40156814197 is a wasteful number, since it uses less digits than its factorization.

40156814197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362165558.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 40156814197 in words is "forty billion, one hundred fifty-six million, eight hundred fourteen thousand, one hundred ninety-seven".