1078942581501 has 4 divisors (see below), whose sum is σ = 1438590108672. Its totient is φ = 719295054332.

The previous prime is 1078942581419. The next prime is 1078942581571. The reversal of 1078942581501 is 1051852498701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1078942581501 - 2²⁶ = 1078875472637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078942581571) 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, 179823763581 + ... + 179823763586.

It is an arithmetic number, because the mean of its divisors is an integer number (359647527168).

Almost surely, 2^{1078942581501} is an apocalyptic number.

It is an amenable number.

1078942581501 is a deficient number, since it is larger than the sum of its proper divisors (359647527171).

1078942581501 is an equidigital number, since it uses as much as digits as its factorization.

1078942581501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359647527170.

The product of its (nonzero) digits is 806400, while the sum is 51.

The spelling of 1078942581501 in words is "one trillion, seventy-eight billion, nine hundred forty-two million, five hundred eighty-one thousand, five hundred one".