40015812098491 has 4 divisors (see below), whose sum is σ = 40412008257984. Its totient is φ = 39619615939000.

The previous prime is 40015812098473. The next prime is 40015812098527. The reversal of 40015812098491 is 19489021851004.

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 40015812098491 - 2⁷ = 40015812098363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40015818098491) 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, 198098079595 + ... + 198098079796.

It is an arithmetic number, because the mean of its divisors is an integer number (10103002064496).

Almost surely, 2^{40015812098491} is an apocalyptic number.

40015812098491 is a deficient number, since it is larger than the sum of its proper divisors (396196159493).

40015812098491 is a wasteful number, since it uses less digits than its factorization.

40015812098491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396196159492.

The product of its (nonzero) digits is 829440, while the sum is 52.

The spelling of 40015812098491 in words is "forty trillion, fifteen billion, eight hundred twelve million, ninety-eight thousand, four hundred ninety-one".