78137652353507 has 2 divisors, whose sum is σ = 78137652353508. Its totient is φ = 78137652353506.

The previous prime is 78137652353479. The next prime is 78137652353557. The reversal of 78137652353507 is 70535325673187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78137652353507 - 2¹⁶ = 78137652287971 is a prime.

It is a super-2 number, since 2×78137652353507² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78137652353507.

It is not a weakly prime, because it can be changed into another prime (78137652353557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39068826176753 + 39068826176754.

It is an arithmetic number, because the mean of its divisors is an integer number (39068826176754).

Almost surely, 2^{78137652353507} is an apocalyptic number.

78137652353507 is a deficient number, since it is larger than the sum of its proper divisors (1).

78137652353507 is an equidigital number, since it uses as much as digits as its factorization.

78137652353507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132000, while the sum is 62.

The spelling of 78137652353507 in words is "seventy-eight trillion, one hundred thirty-seven billion, six hundred fifty-two million, three hundred fifty-three thousand, five hundred seven".