40252065646 has 8 divisors (see below), whose sum is σ = 65022567624. Its totient is φ = 18577876440.

The previous prime is 40252065641. The next prime is 40252065671. The reversal of 40252065646 is 64656025204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40252065599 and 40252065608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40252065641) 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, 774078160 + ... + 774078211.

It is an arithmetic number, because the mean of its divisors is an integer number (8127820953).

Almost surely, 2^40252065646 is an apocalyptic number.

40252065646 is a deficient number, since it is larger than the sum of its proper divisors (24770501978).

40252065646 is a wasteful number, since it uses less digits than its factorization.

40252065646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548156386.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 40252065646 in words is "forty billion, two hundred fifty-two million, sixty-five thousand, six hundred forty-six".