68978027401 has 8 divisors (see below), whose sum is σ = 71811085320. Its totient is φ = 66175269888.

The previous prime is 68978027383. The next prime is 68978027411. The reversal of 68978027401 is 10472087986.

It can be written as a sum of positive squares in 4 ways, for example, as 2970141001 + 66007886400 = 54499^2 + 256920^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68978027401 - 2¹⁹ = 68977503113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68978027411) 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, 7570456 + ... + 7579561.

It is an arithmetic number, because the mean of its divisors is an integer number (8976385665).

Almost surely, 2^68978027401 is an apocalyptic number.

It is an amenable number.

68978027401 is a deficient number, since it is larger than the sum of its proper divisors (2833057919).

68978027401 is a wasteful number, since it uses less digits than its factorization.

68978027401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15150203.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 68978027401 in words is "sixty-eight billion, nine hundred seventy-eight million, twenty-seven thousand, four hundred one".