40625321657 has 8 divisors (see below), whose sum is σ = 42320551680. Its totient is φ = 38954137680.

The previous prime is 40625321593. The next prime is 40625321699. The reversal of 40625321657 is 75612352604.

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

It is a cyclic number.

It is not a de Polignac number, because 40625321657 - 2⁶ = 40625321593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40625321057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6008063 + ... + 6014820.

It is an arithmetic number, because the mean of its divisors is an integer number (5290068960).

Almost surely, 2^40625321657 is an apocalyptic number.

It is an amenable number.

40625321657 is a deficient number, since it is larger than the sum of its proper divisors (1695230023).

40625321657 is a wasteful number, since it uses less digits than its factorization.

40625321657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023023.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 40625321657 in words is "forty billion, six hundred twenty-five million, three hundred twenty-one thousand, six hundred fifty-seven".