521485367970 has 48 divisors (see below), whose sum is σ = 1455902011008. Its totient is φ = 119196655200.

The previous prime is 521485367969. The next prime is 521485368013. The reversal of 521485367970 is 79763584125.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 521485367970.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177374506 + ... + 177377445.

It is an arithmetic number, because the mean of its divisors is an integer number (30331291896).

It is a 1-persistent number, because it is pandigital, but 2⋅521485367970 = 1042970735940 is not.

Almost surely, 2^521485367970 is an apocalyptic number.

521485367970 is an abundant number, since it is smaller than the sum of its proper divisors (934416643038).

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

521485367970 is a wasteful number, since it uses less digits than its factorization.

521485367970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354751975 (or 354751968 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 521485367970 in words is "five hundred twenty-one billion, four hundred eighty-five million, three hundred sixty-seven thousand, nine hundred seventy".