531676638040 has 32 divisors (see below), whose sum is σ = 1218843618480. Its totient is φ = 208658000512.

The previous prime is 531676638013. The next prime is 531676638047. The reversal of 531676638040 is 40836676135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531676638047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125393314 + ... + 125397553.

Almost surely, 2^531676638040 is an apocalyptic number.

It is an amenable number.

531676638040 is an abundant number, since it is smaller than the sum of its proper divisors (687166980440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531676638040 is a wasteful number, since it uses less digits than its factorization.

531676638040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250790931 (or 250790927 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 531676638040 in words is "five hundred thirty-one billion, six hundred seventy-six million, six hundred thirty-eight thousand, forty".