1610601623645 has 16 divisors (see below), whose sum is σ = 2216630133120. Its totient is φ = 1100510017344.

The previous prime is 1610601623641. The next prime is 1610601623663. The reversal of 1610601623645 is 5463261060161.

It is a cyclic number.

It is not a de Polignac number, because 1610601623645 - 2² = 1610601623641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1610601623641) 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, 81292550 + ... + 81312359.

It is an arithmetic number, because the mean of its divisors is an integer number (138539383320).

Almost surely, 2^{1610601623645} is an apocalyptic number.

It is an amenable number.

1610601623645 is a deficient number, since it is larger than the sum of its proper divisors (606028509475).

1610601623645 is a wasteful number, since it uses less digits than its factorization.

1610601623645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162605204.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 1610601623645 in words is "one trillion, six hundred ten billion, six hundred one million, six hundred twenty-three thousand, six hundred forty-five".