40553520557 has 4 divisors (see below), whose sum is σ = 44240204256. Its totient is φ = 36866836860.

The previous prime is 40553520541. The next prime is 40553520583. The reversal of 40553520557 is 75502535504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40553520557 - 2⁴ = 40553520541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40553520157) 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, 1843341833 + ... + 1843341854.

It is an arithmetic number, because the mean of its divisors is an integer number (11060051064).

Almost surely, 2^40553520557 is an apocalyptic number.

It is an amenable number.

40553520557 is a deficient number, since it is larger than the sum of its proper divisors (3686683699).

40553520557 is a wasteful number, since it uses less digits than its factorization.

40553520557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686683698.

The product of its (nonzero) digits is 525000, while the sum is 41.

The spelling of 40553520557 in words is "forty billion, five hundred fifty-three million, five hundred twenty thousand, five hundred fifty-seven".