40424551442531 has 4 divisors (see below), whose sum is σ = 40428122211864. Its totient is φ = 40420980673200.

The previous prime is 40424551442507. The next prime is 40424551442603. The reversal of 40424551442531 is 13524415542404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40424551442531 is a prime.

It is a super-2 number, since 2×40424551442531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40424551442831) 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, 1785367685 + ... + 1785390326.

It is an arithmetic number, because the mean of its divisors is an integer number (10107030552966).

Almost surely, 2^{40424551442531} is an apocalyptic number.

40424551442531 is a deficient number, since it is larger than the sum of its proper divisors (3570769333).

40424551442531 is a wasteful number, since it uses less digits than its factorization.

40424551442531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570769332.

The product of its (nonzero) digits is 1536000, while the sum is 44.

Adding to 40424551442531 its reverse (13524415542404), we get a palindrome (53948966984935).

The spelling of 40424551442531 in words is "forty trillion, four hundred twenty-four billion, five hundred fifty-one million, four hundred forty-two thousand, five hundred thirty-one".