1257177588172 has 12 divisors (see below), whose sum is σ = 2400066304776. Its totient is φ = 571444358240.

The previous prime is 1257177588167. The next prime is 1257177588239. The reversal of 1257177588172 is 2718857717521.

It is a self number, because there is not a number n which added to its sum of digits gives 1257177588172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14286108913 + ... + 14286109000.

It is an arithmetic number, because the mean of its divisors is an integer number (200005525398).

Almost surely, 2^{1257177588172} is an apocalyptic number.

It is an amenable number.

1257177588172 is a deficient number, since it is larger than the sum of its proper divisors (1142888716604).

1257177588172 is a wasteful number, since it uses less digits than its factorization.

1257177588172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28572217928 (or 28572217926 counting only the distinct ones).

The product of its digits is 15366400, while the sum is 61.

The spelling of 1257177588172 in words is "one trillion, two hundred fifty-seven billion, one hundred seventy-seven million, five hundred eighty-eight thousand, one hundred seventy-two".