1283523257870 has 128 divisors (see below), whose sum is σ = 2869404797952. Its totient is φ = 403319347200.

The previous prime is 1283523257857. The next prime is 1283523257873. The reversal of 1283523257870 is 787523253821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283523257873) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16899380 + ... + 16975160.

It is an arithmetic number, because the mean of its divisors is an integer number (22417224984).

Almost surely, 2^{1283523257870} is an apocalyptic number.

1283523257870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1283523257870 is an abundant number, since it is smaller than the sum of its proper divisors (1585881540082).

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

1283523257870 is a wasteful number, since it uses less digits than its factorization.

1283523257870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76186.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 1283523257870 in words is "one trillion, two hundred eighty-three billion, five hundred twenty-three million, two hundred fifty-seven thousand, eight hundred seventy".