40279287251 has 8 divisors (see below), whose sum is σ = 46035770880. Its totient is φ = 34523378568.

The previous prime is 40279287241. The next prime is 40279287283. The reversal of 40279287251 is 15278297204.

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

It is not a de Polignac number, because 40279287251 - 2²⁶ = 40212178387 is a prime.

It is a super-2 number, since 2×40279287251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40279287196 and 40279287205.

It is not an unprimeable number, because it can be changed into a prime (40279287241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18620 + ... + 284438.

It is an arithmetic number, because the mean of its divisors is an integer number (5754471360).

Almost surely, 2^40279287251 is an apocalyptic number.

40279287251 is a deficient number, since it is larger than the sum of its proper divisors (5756483629).

40279287251 is a wasteful number, since it uses less digits than its factorization.

40279287251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287473.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 40279287251 in words is "forty billion, two hundred seventy-nine million, two hundred eighty-seven thousand, two hundred fifty-one".