1245166266156 has 72 divisors (see below), whose sum is σ = 2965776755760. Its totient is φ = 406552447488.

The previous prime is 1245166266119. The next prime is 1245166266191. The reversal of 1245166266156 is 6516626615421.

It is a junction number, because it is equal to n+sod(n) for n = 1245166266099 and 1245166266108.

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, 12176616 + ... + 12278448.

It is an arithmetic number, because the mean of its divisors is an integer number (41191343830).

Almost surely, 2^{1245166266156} is an apocalyptic number.

It is an amenable number.

1245166266156 is an abundant number, since it is smaller than the sum of its proper divisors (1720610489604).

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

1245166266156 is a wasteful number, since it uses less digits than its factorization.

1245166266156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102143 (or 102034 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 51.

The spelling of 1245166266156 in words is "one trillion, two hundred forty-five billion, one hundred sixty-six million, two hundred sixty-six thousand, one hundred fifty-six".