40308751291 has 4 divisors (see below), whose sum is σ = 40340170152. Its totient is φ = 40277332432.

The previous prime is 40308751283. The next prime is 40308751309. The reversal of 40308751291 is 19215780304.

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

It is a cyclic number.

It is not a de Polignac number, because 40308751291 - 2³ = 40308751283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40303751291) 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, 15707506 + ... + 15710071.

It is an arithmetic number, because the mean of its divisors is an integer number (10085042538).

Almost surely, 2^40308751291 is an apocalyptic number.

40308751291 is a deficient number, since it is larger than the sum of its proper divisors (31418861).

40308751291 is a wasteful number, since it uses less digits than its factorization.

40308751291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31418860.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 40308751291 in words is "forty billion, three hundred eight million, seven hundred fifty-one thousand, two hundred ninety-one".