385261500077 has 8 divisors (see below), whose sum is σ = 421990284600. Its totient is φ = 350095642624.

The previous prime is 385261500017. The next prime is 385261500103. The reversal of 385261500077 is 770005162583.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17602390276 + 367659109801 = 132674^2 + 606349^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385261500077 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 (385261500017) 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, 390731252 + ... + 390732237.

It is an arithmetic number, because the mean of its divisors is an integer number (52748785575).

Almost surely, 2^385261500077 is an apocalyptic number.

It is an amenable number.

385261500077 is a deficient number, since it is larger than the sum of its proper divisors (36728784523).

385261500077 is a wasteful number, since it uses less digits than its factorization.

385261500077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781463535.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 385261500077 in words is "three hundred eighty-five billion, two hundred sixty-one million, five hundred thousand, seventy-seven".