1262864201655 has 16 divisors (see below), whose sum is σ = 2309237397504. Its totient is φ = 577309349280.

The previous prime is 1262864201591. The next prime is 1262864201659. The reversal of 1262864201655 is 5561024682621.

It is not a de Polignac number, because 1262864201655 - 2⁶ = 1262864201591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262864201659) 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, 6013638951 + ... + 6013639160.

It is an arithmetic number, because the mean of its divisors is an integer number (144327337344).

Almost surely, 2^{1262864201655} is an apocalyptic number.

1262864201655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1262864201655 is a deficient number, since it is larger than the sum of its proper divisors (1046373195849).

1262864201655 is a wasteful number, since it uses less digits than its factorization.

1262864201655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12027278126.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 1262864201655 in words is "one trillion, two hundred sixty-two billion, eight hundred sixty-four million, two hundred one thousand, six hundred fifty-five".