1623134153961 has 24 divisors (see below), whose sum is σ = 2354170374504. Its totient is φ = 1077647800320.

The previous prime is 1623134153959. The next prime is 1623134153969. The reversal of 1623134153961 is 1693514313261.

1623134153961 is a `hidden beast` number, since 1 + 6 + 2 + 3 + 13 + 41 + 539 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 547090998336 + 1076043155625 = 739656^2 + 1037325^2 .

It is not a de Polignac number, because 1623134153961 - 2¹ = 1623134153959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1623134153969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1764145 + ... + 2521601.

It is an arithmetic number, because the mean of its divisors is an integer number (98090432271).

Almost surely, 2^{1623134153961} is an apocalyptic number.

It is an amenable number.

1623134153961 is a deficient number, since it is larger than the sum of its proper divisors (731036220543).

1623134153961 is a wasteful number, since it uses less digits than its factorization.

1623134153961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758441 (or 758438 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The spelling of 1623134153961 in words is "one trillion, six hundred twenty-three billion, one hundred thirty-four million, one hundred fifty-three thousand, nine hundred sixty-one".