78148842202545 has 16 divisors (see below), whose sum is σ = 125038267216512. Its totient is φ = 41679342610560.

The previous prime is 78148842202507. The next prime is 78148842202547. The reversal of 78148842202545 is 54520224884187.

It is not a de Polignac number, because 78148842202545 - 2²¹ = 78148840105393 is a prime.

It is a super-2 number, since 2×78148842202545² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78148842202547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20594604 + ... + 24092226.

It is an arithmetic number, because the mean of its divisors is an integer number (7814891701032).

Almost surely, 2^{78148842202545} is an apocalyptic number.

It is an amenable number.

78148842202545 is a deficient number, since it is larger than the sum of its proper divisors (46889425013967).

78148842202545 is a wasteful number, since it uses less digits than its factorization.

78148842202545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987192.

The product of its (nonzero) digits is 45875200, while the sum is 60.

The spelling of 78148842202545 in words is "seventy-eight trillion, one hundred forty-eight billion, eight hundred forty-two million, two hundred two thousand, five hundred forty-five".