40245773430253 has 4 divisors (see below), whose sum is σ = 40323020596668. Its totient is φ = 40168526263840.

The previous prime is 40245773430227. The next prime is 40245773430263. The reversal of 40245773430253 is 35203437754204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11391826531684 + 28853946898569 = 3375178^2 + 5371587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40245773430253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40245773430197 and 40245773430206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245773430223) 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, 38623582426 + ... + 38623583467.

It is an arithmetic number, because the mean of its divisors is an integer number (10080755149167).

Almost surely, 2^{40245773430253} is an apocalyptic number.

It is an amenable number.

40245773430253 is a deficient number, since it is larger than the sum of its proper divisors (77247166415).

40245773430253 is an equidigital number, since it uses as much as digits as its factorization.

40245773430253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77247166414.

The product of its (nonzero) digits is 8467200, while the sum is 49.

The spelling of 40245773430253 in words is "forty trillion, two hundred forty-five billion, seven hundred seventy-three million, four hundred thirty thousand, two hundred fifty-three".