1615261260253 has 2 divisors, whose sum is σ = 1615261260254. Its totient is φ = 1615261260252.

The previous prime is 1615261260211. The next prime is 1615261260257. The reversal of 1615261260253 is 3520621625161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 871558546329 + 743702713924 = 933573^2 + 862382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615261260253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615261260257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807630630126 + 807630630127.

It is an arithmetic number, because the mean of its divisors is an integer number (807630630127).

Almost surely, 2^{1615261260253} is an apocalyptic number.

It is an amenable number.

1615261260253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615261260253 is an equidigital number, since it uses as much as digits as its factorization.

1615261260253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 1615261260253 in words is "one trillion, six hundred fifteen billion, two hundred sixty-one million, two hundred sixty thousand, two hundred fifty-three".