877577380378 has 4 divisors (see below), whose sum is σ = 1316366070570. Its totient is φ = 438788690188.

The previous prime is 877577380327. The next prime is 877577380397. The reversal of 877577380378 is 873083775778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873083775778 = 2 ⋅436541887889.

It can be written as a sum of positive squares in only one way, i.e., 860974284769 + 16603095609 = 927887^2 + 128853^2 .

It is a super-2 number, since 2×877577380378² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219394345093 + ... + 219394345096.

Almost surely, 2^877577380378 is an apocalyptic number.

877577380378 is a deficient number, since it is larger than the sum of its proper divisors (438788690192).

877577380378 is a wasteful number, since it uses less digits than its factorization.

877577380378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438788690191.

The product of its (nonzero) digits is 387233280, while the sum is 70.

The spelling of 877577380378 in words is "eight hundred seventy-seven billion, five hundred seventy-seven million, three hundred eighty thousand, three hundred seventy-eight".