780000101010001 has 4 divisors (see below), whose sum is σ = 799024493717604. Its totient is φ = 760975708302400.

The previous prime is 780000101009971. The next prime is 780000101010017. The reversal of 780000101010001 is 100010101000087.

780000101010001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21322931640976 + 758677169369025 = 4617676^2 + 27544095^2 .

It is a cyclic number.

It is not a de Polignac number, because 780000101010001 - 2¹⁹ = 780000100485713 is a prime.

It is a super-2 number, since 2×780000101010001² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780000101010061) 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, 9512196353740 + ... + 9512196353821.

It is an arithmetic number, because the mean of its divisors is an integer number (199756123429401).

Almost surely, 2^{780000101010001} is an apocalyptic number.

It is an amenable number.

780000101010001 is a deficient number, since it is larger than the sum of its proper divisors (19024392707603).

780000101010001 is a wasteful number, since it uses less digits than its factorization.

780000101010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19024392707602.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 780000101010001 its reverse (100010101000087), we get a palindrome (880010202010088).

The spelling of 780000101010001 in words is "seven hundred eighty trillion, one hundred one million, ten thousand, one".