40651381838632 has 8 divisors (see below), whose sum is σ = 76221340947450. Its totient is φ = 20325690919312.

The previous prime is 40651381838629. The next prime is 40651381838633. The reversal of 40651381838632 is 23683818315604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40500165072676 + 151216765956 = 6363974^2 + 388866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40651381838633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540711364907 + ... + 2540711364922.

Almost surely, 2^{40651381838632} is an apocalyptic number.

It is an amenable number.

40651381838632 is a deficient number, since it is larger than the sum of its proper divisors (35569959108818).

40651381838632 is a wasteful number, since it uses less digits than its factorization.

40651381838632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081422729835 (or 5081422729831 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 40651381838632 in words is "forty trillion, six hundred fifty-one billion, three hundred eighty-one million, eight hundred thirty-eight thousand, six hundred thirty-two".