40578361537 has 4 divisors (see below), whose sum is σ = 46375270336. Its totient is φ = 34781452740.

The previous prime is 40578361517. The next prime is 40578361559. The reversal of 40578361537 is 73516387504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40578361537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40578361507) 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, 2898454389 + ... + 2898454402.

It is an arithmetic number, because the mean of its divisors is an integer number (11593817584).

Almost surely, 2^40578361537 is an apocalyptic number.

It is an amenable number.

40578361537 is a deficient number, since it is larger than the sum of its proper divisors (5796908799).

40578361537 is an equidigital number, since it uses as much as digits as its factorization.

40578361537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796908798.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 40578361537 in words is "forty billion, five hundred seventy-eight million, three hundred sixty-one thousand, five hundred thirty-seven".