40245561513 has 24 divisors (see below), whose sum is σ = 59521670208. Its totient is φ = 26189991072.

The previous prime is 40245561467. The next prime is 40245561553. The reversal of 40245561513 is 31516554204.

40245561513 is a `hidden beast` number, since 4 + 0 + 2 + 45 + 561 + 51 + 3 = 666.

It is not a de Polignac number, because 40245561513 - 2¹⁴ = 40245545129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40245561553) 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 23 ways as a sum of consecutive naturals, for example, 601756 + ... + 665282.

It is an arithmetic number, because the mean of its divisors is an integer number (2480069592).

Almost surely, 2^40245561513 is an apocalyptic number.

40245561513 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40245561513 is a deficient number, since it is larger than the sum of its proper divisors (19276108695).

40245561513 is a wasteful number, since it uses less digits than its factorization.

40245561513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65213 (or 65210 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 40245561513 in words is "forty billion, two hundred forty-five million, five hundred sixty-one thousand, five hundred thirteen".