40157955685 has 8 divisors (see below), whose sum is σ = 50725838880. Its totient is φ = 30435503184.

The previous prime is 40157955667. The next prime is 40157955689. The reversal of 40157955685 is 58655975104.

40157955685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40157955685 - 2¹³ = 40157947493 is a prime.

It is a super-2 number, since 2×40157955685² (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 (40157955689) 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, 211357567 + ... + 211357756.

It is an arithmetic number, because the mean of its divisors is an integer number (6340729860).

Almost surely, 2^40157955685 is an apocalyptic number.

It is an amenable number.

40157955685 is a deficient number, since it is larger than the sum of its proper divisors (10567883195).

40157955685 is a wasteful number, since it uses less digits than its factorization.

40157955685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422715347.

The product of its (nonzero) digits is 7560000, while the sum is 55.

The spelling of 40157955685 in words is "forty billion, one hundred fifty-seven million, nine hundred fifty-five thousand, six hundred eighty-five".