611405501423 has 32 divisors (see below), whose sum is σ = 668568600000. Its totient is φ = 557194567680.

The previous prime is 611405501411. The next prime is 611405501437. The reversal of 611405501423 is 324105504116.

It is a cyclic number.

It is not a de Polignac number, because 611405501423 - 2⁶ = 611405501359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611405501423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611405501123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15882503 + ... + 15920951.

It is an arithmetic number, because the mean of its divisors is an integer number (20892768750).

Almost surely, 2^611405501423 is an apocalyptic number.

611405501423 is a deficient number, since it is larger than the sum of its proper divisors (57163098577).

611405501423 is a wasteful number, since it uses less digits than its factorization.

611405501423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38795.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 611405501423 in words is "six hundred eleven billion, four hundred five million, five hundred one thousand, four hundred twenty-three".