40520600251 has 8 divisors (see below), whose sum is σ = 40587491664. Its totient is φ = 40453766400.

The previous prime is 40520600203. The next prime is 40520600303. The reversal of 40520600251 is 15200602504.

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 40520600251 - 2²¹ = 40518503099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40520600201) 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, 1527735 + ... + 1554031.

It is an arithmetic number, because the mean of its divisors is an integer number (5073436458).

Almost surely, 2^40520600251 is an apocalyptic number.

40520600251 is a deficient number, since it is larger than the sum of its proper divisors (66891413).

40520600251 is a wasteful number, since it uses less digits than its factorization.

40520600251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28781.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 40520600251 in words is "forty billion, five hundred twenty million, six hundred thousand, two hundred fifty-one".