40205154586747 has 2 divisors, whose sum is σ = 40205154586748. Its totient is φ = 40205154586746.

The previous prime is 40205154586711. The next prime is 40205154586759. The reversal of 40205154586747 is 74768545150204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40205154586747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40205154586691 and 40205154586700.

It is not a weakly prime, because it can be changed into another prime (40205154586847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102577293373 + 20102577293374.

It is an arithmetic number, because the mean of its divisors is an integer number (20102577293374).

Almost surely, 2^{40205154586747} is an apocalyptic number.

40205154586747 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205154586747 is an equidigital number, since it uses as much as digits as its factorization.

40205154586747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632000, while the sum is 58.

The spelling of 40205154586747 in words is "forty trillion, two hundred five billion, one hundred fifty-four million, five hundred eighty-six thousand, seven hundred forty-seven".