1557155052116 has 6 divisors (see below), whose sum is σ = 2725021341210. Its totient is φ = 778577526056.

The previous prime is 1557155052073. The next prime is 1557155052137. The reversal of 1557155052116 is 6112505517551.

It can be written as a sum of positive squares in only one way, i.e., 1205612784016 + 351542268100 = 1098004^2 + 592910^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194644381511 + ... + 194644381518.

It is an arithmetic number, because the mean of its divisors is an integer number (454170223535).

Almost surely, 2^{1557155052116} is an apocalyptic number.

It is an amenable number.

1557155052116 is a deficient number, since it is larger than the sum of its proper divisors (1167866289094).

1557155052116 is a wasteful number, since it uses less digits than its factorization.

1557155052116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389288763033 (or 389288763031 counting only the distinct ones).

The product of its (nonzero) digits is 262500, while the sum is 44.

The spelling of 1557155052116 in words is "one trillion, five hundred fifty-seven billion, one hundred fifty-five million, fifty-two thousand, one hundred sixteen".