40163404783787 has 4 divisors (see below), whose sum is σ = 42277268193480. Its totient is φ = 38049541374096.

The previous prime is 40163404783783. The next prime is 40163404783937. The reversal of 40163404783787 is 78738740436104.

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

It is a cyclic number.

It is not a de Polignac number, because 40163404783787 - 2² = 40163404783783 is a prime.

It is a super-2 number, since 2×40163404783787² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40163404783783) 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, 1056931704818 + ... + 1056931704855.

It is an arithmetic number, because the mean of its divisors is an integer number (10569317048370).

Almost surely, 2^{40163404783787} is an apocalyptic number.

40163404783787 is a deficient number, since it is larger than the sum of its proper divisors (2113863409693).

40163404783787 is a wasteful number, since it uses less digits than its factorization.

40163404783787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113863409692.

The product of its (nonzero) digits is 75866112, while the sum is 62.

The spelling of 40163404783787 in words is "forty trillion, one hundred sixty-three billion, four hundred four million, seven hundred eighty-three thousand, seven hundred eighty-seven".