78148447711424 has 56 divisors (see below), whose sum is σ = 155437969032000. Its totient is φ = 38983077754880.

The previous prime is 78148447711423. The next prime is 78148447711459. The reversal of 78148447711424 is 42411774484187.

It is a happy number.

It is a super-2 number, since 2×78148447711424² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78148447711423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48022652 + ... + 49623300.

Almost surely, 2^{78148447711424} is an apocalyptic number.

It is an amenable number.

78148447711424 is a deficient number, since it is larger than the sum of its proper divisors (77289521320576).

78148447711424 is a wasteful number, since it uses less digits than its factorization.

78148447711424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602441 (or 1602431 counting only the distinct ones).

The product of its digits is 44957696, while the sum is 62.

The spelling of 78148447711424 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred forty-seven million, seven hundred eleven thousand, four hundred twenty-four".