40521512351 has 4 divisors (see below), whose sum is σ = 40521916512. Its totient is φ = 40521108192.

The previous prime is 40521512281. The next prime is 40521512357. The reversal of 40521512351 is 15321512504.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40521512351 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 (40521512357) 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, 74426 + ... + 294248.

It is an arithmetic number, because the mean of its divisors is an integer number (10130479128).

Almost surely, 2^40521512351 is an apocalyptic number.

40521512351 is a deficient number, since it is larger than the sum of its proper divisors (404161).

40521512351 is a wasteful number, since it uses less digits than its factorization.

40521512351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404160.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 40521512351 in words is "forty billion, five hundred twenty-one million, five hundred twelve thousand, three hundred fifty-one".