378836617577 has 12 divisors (see below), whose sum is σ = 424263937860. Its totient is φ = 337898864160.

The previous prime is 378836617573. The next prime is 378836617603. The reversal of 378836617577 is 775716638873.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 339876174121 + 38960443456 = 582989^2 + 197384^2 .

It is not a de Polignac number, because 378836617577 - 2² = 378836617573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378836617573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29530202 + ... + 29543027.

It is an arithmetic number, because the mean of its divisors is an integer number (35355328155).

Almost surely, 2^378836617577 is an apocalyptic number.

It is an amenable number.

378836617577 is a deficient number, since it is larger than the sum of its proper divisors (45427320283).

378836617577 is a wasteful number, since it uses less digits than its factorization.

378836617577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59073304 (or 59073293 counting only the distinct ones).

The product of its digits is 248935680, while the sum is 68.

The spelling of 378836617577 in words is "three hundred seventy-eight billion, eight hundred thirty-six million, six hundred seventeen thousand, five hundred seventy-seven".