40894511157 has 6 divisors (see below), whose sum is σ = 59069849462. Its totient is φ = 27263007432.

The previous prime is 40894511137. The next prime is 40894511179. The reversal of 40894511157 is 75111549804.

40894511157 is a `hidden beast` number, since 4 + 0 + 89 + 4 + 511 + 1 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36448155396 + 4446355761 = 190914^2 + 66681^2 .

It is not a de Polignac number, because 40894511157 - 2⁶ = 40894511093 is a prime.

It is a super-2 number, since 2×40894511157² (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 (40894511117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2271917278 + ... + 2271917295.

Almost surely, 2^40894511157 is an apocalyptic number.

It is an amenable number.

40894511157 is a deficient number, since it is larger than the sum of its proper divisors (18175338305).

40894511157 is a wasteful number, since it uses less digits than its factorization.

40894511157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543834579 (or 4543834576 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 40894511157 in words is "forty billion, eight hundred ninety-four million, five hundred eleven thousand, one hundred fifty-seven".