1238565070648 has 8 divisors (see below), whose sum is σ = 2322309507480. Its totient is φ = 619282535320.

The previous prime is 1238565070627. The next prime is 1238565070657. The reversal of 1238565070648 is 8460705658321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1238565070648² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77410316908 + ... + 77410316923.

It is an arithmetic number, because the mean of its divisors is an integer number (290288688435).

Almost surely, 2^{1238565070648} is an apocalyptic number.

It is an amenable number.

1238565070648 is a deficient number, since it is larger than the sum of its proper divisors (1083744436832).

1238565070648 is a wasteful number, since it uses less digits than its factorization.

1238565070648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154820633837 (or 154820633833 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 1238565070648 in words is "one trillion, two hundred thirty-eight billion, five hundred sixty-five million, seventy thousand, six hundred forty-eight".