597661085878 has 4 divisors (see below), whose sum is σ = 896491628820. Its totient is φ = 298830542938.

The previous prime is 597661085851. The next prime is 597661085881. The reversal of 597661085878 is 878580166795.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878580166795 = 5 ⋅175716033359.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149415271468 + ... + 149415271471.

It is an arithmetic number, because the mean of its divisors is an integer number (224122907205).

Almost surely, 2^597661085878 is an apocalyptic number.

597661085878 is a deficient number, since it is larger than the sum of its proper divisors (298830542942).

597661085878 is a wasteful number, since it uses less digits than its factorization.

597661085878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298830542941.

The product of its (nonzero) digits is 203212800, while the sum is 70.

The spelling of 597661085878 in words is "five hundred ninety-seven billion, six hundred sixty-one million, eighty-five thousand, eight hundred seventy-eight".