385961021477 has 4 divisors (see below), whose sum is σ = 385962286476. Its totient is φ = 385959756480.

The previous prime is 385961021473. The next prime is 385961021503. The reversal of 385961021477 is 774120169583.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 122916152836 + 263044868641 = 350594^2 + 512879^2 .

It is a cyclic number.

It is not a de Polignac number, because 385961021477 - 2² = 385961021473 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 (385961021473) 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, 138173 + ... + 889389.

It is an arithmetic number, because the mean of its divisors is an integer number (96490571619).

It is a 1-persistent number, because it is pandigital, but 2⋅385961021477 = 771922042954 is not.

Almost surely, 2^385961021477 is an apocalyptic number.

It is an amenable number.

385961021477 is a deficient number, since it is larger than the sum of its proper divisors (1264999).

385961021477 is an equidigital number, since it uses as much as digits as its factorization.

385961021477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264998.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 385961021477 in words is "three hundred eighty-five billion, nine hundred sixty-one million, twenty-one thousand, four hundred seventy-seven".