78148842202544 has 20 divisors (see below), whose sum is σ = 151429255150680. Its totient is φ = 39070324744320.

The previous prime is 78148842202507. The next prime is 78148842202547. The reversal of 78148842202544 is 44520224884187.

It is a super-2 number, since 2×78148842202544² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 255864917 + ... + 256170164.

It is an arithmetic number, because the mean of its divisors is an integer number (7571462757534).

Almost surely, 2^{78148842202544} is an apocalyptic number.

It is an amenable number.

78148842202544 is a deficient number, since it is larger than the sum of its proper divisors (73280412948136).

78148842202544 is a wasteful number, since it uses less digits than its factorization.

78148842202544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512044628 (or 512044622 counting only the distinct ones).

The product of its (nonzero) digits is 36700160, while the sum is 59.

The spelling of 78148842202544 in words is "seventy-eight trillion, one hundred forty-eight billion, eight hundred forty-two million, two hundred two thousand, five hundred forty-four".