780078101 has 8 divisors (see below), whose sum is σ = 851580000. Its totient is φ = 708673840.

The previous prime is 780078071. The next prime is 780078121. The reversal of 780078101 is 101870087.

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 780078101 - 2¹⁸ = 779815957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780078121) 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, 7166 + ... + 40143.

It is an arithmetic number, because the mean of its divisors is an integer number (106447500).

Almost surely, 2^780078101 is an apocalyptic number.

It is an amenable number.

780078101 is a deficient number, since it is larger than the sum of its proper divisors (71501899).

780078101 is a wasteful number, since it uses less digits than its factorization.

780078101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48819.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 780078101 is about 27929.8782847330. The cubic root of 780078101 is about 920.5471308382.

The spelling of 780078101 in words is "seven hundred eighty million, seventy-eight thousand, one hundred one".