1405246655761 has 27 divisors (see below), whose sum is σ = 1545843717873. Its totient is φ = 1276851438720.

The previous prime is 1405246655737. The next prime is 1405246655767. The reversal of 1405246655761 is 1675566425041.

The square root of 1405246655761 is 1185431.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 654521450625 + 750725205136 = 809025^2 + 866444^2 .

It is not a de Polignac number, because 1405246655761 - 2⁷ = 1405246655633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1405246655699 and 1405246655708.

It is not an unprimeable number, because it can be changed into a prime (1405246655767) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1032509721 + ... + 1032511081.

Almost surely, 2^{1405246655761} is an apocalyptic number.

1405246655761 is the 1185431-st square number.

1405246655761 is the 592716-th centered octagonal number.

It is an amenable number.

1405246655761 is a deficient number, since it is larger than the sum of its proper divisors (140597062112).

1405246655761 is an frugal number, since it uses more digits than its factorization.

1405246655761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 1405246655761 in words is "one trillion, four hundred five billion, two hundred forty-six million, six hundred fifty-five thousand, seven hundred sixty-one".