1969655061136 has 45 divisors (see below), whose sum is σ = 4439349402051. Its totient is φ = 844121042016.

The previous prime is 1969655061097. The next prime is 1969655061137. The reversal of 1969655061136 is 6311605569691.

It is a happy number.

The square root of 1969655061136 is 1403444.

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

It is a super-2 number, since 2×1969655061136² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1969655061137) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39271371 + ... + 39321493.

Almost surely, 2^{1969655061136} is an apocalyptic number.

1969655061136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1969655061136 is the 1403444-th square number.

It is an amenable number.

1969655061136 is an abundant number, since it is smaller than the sum of its proper divisors (2469694340915).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1969655061136 is an frugal number, since it uses more digits than its factorization.

1969655061136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100268 (or 50132 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 58.

The spelling of 1969655061136 in words is "one trillion, nine hundred sixty-nine billion, six hundred fifty-five million, sixty-one thousand, one hundred thirty-six".