523025002978 has 4 divisors (see below), whose sum is σ = 784537504470. Its totient is φ = 261512501488.

The previous prime is 523025002933. The next prime is 523025003027. The reversal of 523025002978 is 879200520325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 315869852529 + 207155150449 = 562023^2 + 455143^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130756250743 + ... + 130756250746.

Almost surely, 2^523025002978 is an apocalyptic number.

523025002978 is a deficient number, since it is larger than the sum of its proper divisors (261512501492).

523025002978 is a wasteful number, since it uses less digits than its factorization.

523025002978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261512501491.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 523025002978 in words is "five hundred twenty-three billion, twenty-five million, two thousand, nine hundred seventy-eight".