655531371495 has 432 divisors, whose sum is σ = 1619477338752. Its totient is φ = 251430117120.

The previous prime is 655531371437. The next prime is 655531371497. The reversal of 655531371495 is 594173135556.

It is a happy number.

655531371495 is a `hidden beast` number, since 6 + 5 + 5 + 531 + 3 + 7 + 14 + 95 = 666.

It is not a de Polignac number, because 655531371495 - 2⁶ = 655531371431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655531371497) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 110672604 + ... + 110678526.

It is an arithmetic number, because the mean of its divisors is an integer number (3748790136).

Almost surely, 2^655531371495 is an apocalyptic number.

655531371495 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

655531371495 is an abundant number, since it is smaller than the sum of its proper divisors (963945967257).

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

655531371495 is a wasteful number, since it uses less digits than its factorization.

655531371495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994 (or 5962 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 54.

The spelling of 655531371495 in words is "six hundred fifty-five billion, five hundred thirty-one million, three hundred seventy-one thousand, four hundred ninety-five".