1213342602651 has 8 divisors (see below), whose sum is σ = 1797544596560. Its totient is φ = 808895068416.

The previous prime is 1213342602643. The next prime is 1213342602673. The reversal of 1213342602651 is 1562062433121.

1213342602651 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 3 + 42 + 602 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 1213342602651 - 2³ = 1213342602643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213342602631) 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, 22469307430 + ... + 22469307483.

It is an arithmetic number, because the mean of its divisors is an integer number (224693074570).

Almost surely, 2^{1213342602651} is an apocalyptic number.

1213342602651 is a deficient number, since it is larger than the sum of its proper divisors (584201993909).

1213342602651 is an equidigital number, since it uses as much as digits as its factorization.

1213342602651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44938614922 (or 44938614916 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

It can be divided in two parts, 12133 and 42602651, that added together give a square (42614784 = 6528²).

The spelling of 1213342602651 in words is "one trillion, two hundred thirteen billion, three hundred forty-two million, six hundred two thousand, six hundred fifty-one".