1187225240653 has 16 divisors (see below), whose sum is σ = 1224276934896. Its totient is φ = 1150904678400.

The previous prime is 1187225240651. The next prime is 1187225240699. The reversal of 1187225240653 is 3560425227811.

It can be written as a sum of positive squares in 8 ways, for example, as 362612321929 + 824612918724 = 602173^2 + 908082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187225240653 - 2¹ = 1187225240651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187225240651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422425 + ... + 1597777.

It is an arithmetic number, because the mean of its divisors is an integer number (76517308431).

Almost surely, 2^{1187225240653} is an apocalyptic number.

It is an amenable number.

1187225240653 is a deficient number, since it is larger than the sum of its proper divisors (37051694243).

1187225240653 is a wasteful number, since it uses less digits than its factorization.

1187225240653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175664.

The product of its (nonzero) digits is 806400, while the sum is 46.

It can be divided in two parts, 118722 and 5240653, that added together give a cube (5359375 = 175³).

The spelling of 1187225240653 in words is "one trillion, one hundred eighty-seven billion, two hundred twenty-five million, two hundred forty thousand, six hundred fifty-three".