40741761637 has 4 divisors (see below), whose sum is σ = 40744994220. Its totient is φ = 40738529056.

The previous prime is 40741761607. The next prime is 40741761691. The reversal of 40741761637 is 73616714704.

It is a happy number.

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 16507367361 + 24234394276 = 128481^2 + 155674^2 .

It is a cyclic number.

It is not a de Polignac number, because 40741761637 - 2¹¹ = 40741759589 is a prime.

It is a super-2 number, since 2×40741761637² (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 (40741761607) 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, 1597312 + ... + 1622617.

It is an arithmetic number, because the mean of its divisors is an integer number (10186248555).

Almost surely, 2^40741761637 is an apocalyptic number.

It is an amenable number.

40741761637 is a deficient number, since it is larger than the sum of its proper divisors (3232583).

40741761637 is a wasteful number, since it uses less digits than its factorization.

40741761637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232582.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 40741761637 in words is "forty billion, seven hundred forty-one million, seven hundred sixty-one thousand, six hundred thirty-seven".