655405544001 has 32 divisors (see below), whose sum is σ = 960950833920. Its totient is φ = 394897572864.

The previous prime is 655405543999. The next prime is 655405544009. The reversal of 655405544001 is 100445504556.

It is not a de Polignac number, because 655405544001 - 2¹ = 655405543999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (655405544009) 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, 450141 + ... + 1230218.

It is an arithmetic number, because the mean of its divisors is an integer number (30029713560).

Almost surely, 2^655405544001 is an apocalyptic number.

It is an amenable number.

655405544001 is a deficient number, since it is larger than the sum of its proper divisors (305545289919).

655405544001 is a wasteful number, since it uses less digits than its factorization.

655405544001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680585.

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 655405544001 in words is "six hundred fifty-five billion, four hundred five million, five hundred forty-four thousand, one".