671155501263455 has 32 divisors (see below), whose sum is σ = 867614852107584. Its totient is φ = 495465154569216.

The previous prime is 671155501263427. The next prime is 671155501263553. The reversal of 671155501263455 is 554362105551176.

It is not a de Polignac number, because 671155501263455 - 2¹² = 671155501259359 is a prime.

It is a super-2 number, since 2×671155501263455² (a number of 30 digits) contains 22 as substring.

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 671155501263455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3128574857 + ... + 3128789373.

It is an arithmetic number, because the mean of its divisors is an integer number (27112964128362).

Almost surely, 2^{671155501263455} is an apocalyptic number.

671155501263455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

671155501263455 is a deficient number, since it is larger than the sum of its proper divisors (196459350844129).

671155501263455 is a wasteful number, since it uses less digits than its factorization.

671155501263455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229595.

The product of its (nonzero) digits is 18900000, while the sum is 56.

The spelling of 671155501263455 in words is "six hundred seventy-one trillion, one hundred fifty-five billion, five hundred one million, two hundred sixty-three thousand, four hundred fifty-five".