1155105273970 has 16 divisors (see below), whose sum is σ = 2079228959640. Its totient is φ = 462033339264.

The previous prime is 1155105273937. The next prime is 1155105273977. The reversal of 1155105273970 is 793725015511.

It can be written as a sum of positive squares in 4 ways, for example, as 472797885609 + 682307388361 = 687603^2 + 826019^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155105273970.

It is not an unprimeable number, because it can be changed into a prime (1155105273977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529155 + ... + 1609414.

Almost surely, 2^{1155105273970} is an apocalyptic number.

1155105273970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155105273970 is a deficient number, since it is larger than the sum of its proper divisors (924123685670).

1155105273970 is a wasteful number, since it uses less digits than its factorization.

1155105273970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192589.

The product of its (nonzero) digits is 330750, while the sum is 46.

The spelling of 1155105273970 in words is "one trillion, one hundred fifty-five billion, one hundred five million, two hundred seventy-three thousand, nine hundred seventy".