40551772641 has 16 divisors (see below), whose sum is σ = 54278773824. Its totient is φ = 26929767744.

The previous prime is 40551772621. The next prime is 40551772753. The reversal of 40551772641 is 14627715504.

It is not a de Polignac number, because 40551772641 - 2⁵ = 40551772609 is a prime.

It is a super-2 number, since 2×40551772641² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40551772593 and 40551772602.

It is not an unprimeable number, because it can be changed into a prime (40551772601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1367130 + ... + 1396476.

It is an arithmetic number, because the mean of its divisors is an integer number (3392423364).

Almost surely, 2^40551772641 is an apocalyptic number.

It is an amenable number.

40551772641 is a deficient number, since it is larger than the sum of its proper divisors (13727001183).

40551772641 is a wasteful number, since it uses less digits than its factorization.

40551772641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31120.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 40551772641 in words is "forty billion, five hundred fifty-one million, seven hundred seventy-two thousand, six hundred forty-one".