40641551634 has 16 divisors (see below), whose sum is σ = 81285824160. Its totient is φ = 13546730400.

The previous prime is 40641551633. The next prime is 40641551651. The reversal of 40641551634 is 43615514604.

It is a junction number, because it is equal to n+sod(n) for n = 40641551592 and 40641551601.

It is not an unprimeable number, because it can be changed into a prime (40641551633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116737 + ... + 308075.

It is an arithmetic number, because the mean of its divisors is an integer number (5080364010).

Almost surely, 2^40641551634 is an apocalyptic number.

40641551634 is an abundant number, since it is smaller than the sum of its proper divisors (40644272526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40641551634 is a wasteful number, since it uses less digits than its factorization.

40641551634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226745.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 40641551634 in words is "forty billion, six hundred forty-one million, five hundred fifty-one thousand, six hundred thirty-four".