1251345320210 has 16 divisors (see below), whose sum is σ = 2350352949696. Its totient is φ = 478775600688.

The previous prime is 1251345320207. The next prime is 1251345320261. The reversal of 1251345320210 is 120235431521.

It is a super-2 number, since 2×1251345320210² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2720315684 + ... + 2720316143.

It is an arithmetic number, because the mean of its divisors is an integer number (146897059356).

Almost surely, 2^{1251345320210} is an apocalyptic number.

1251345320210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251345320210 is a deficient number, since it is larger than the sum of its proper divisors (1099007629486).

1251345320210 is a wasteful number, since it uses less digits than its factorization.

1251345320210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440631857.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 1251345320210 in words is "one trillion, two hundred fifty-one billion, three hundred forty-five million, three hundred twenty thousand, two hundred ten".