1178158474451 has 16 divisors (see below), whose sum is σ = 1374216192000. Its totient is φ = 1009651341384.

The previous prime is 1178158474429. The next prime is 1178158474457. The reversal of 1178158474451 is 1544748518711.

It is not a de Polignac number, because 1178158474451 - 2¹⁸ = 1178158212307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1178158474457) 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, 1420316 + ... + 2091318.

It is an arithmetic number, because the mean of its divisors is an integer number (85888512000).

Almost surely, 2^{1178158474451} is an apocalyptic number.

1178158474451 is a deficient number, since it is larger than the sum of its proper divisors (196057717549).

1178158474451 is an frugal number, since it uses more digits than its factorization.

1178158474451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676143 (or 676129 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 56.

The spelling of 1178158474451 in words is "one trillion, one hundred seventy-eight billion, one hundred fifty-eight million, four hundred seventy-four thousand, four hundred fifty-one".