348123557640 has 32 divisors (see below), whose sum is σ = 1044370673280. Its totient is φ = 92832948672.

The previous prime is 348123557609. The next prime is 348123557641. The reversal of 348123557640 is 46755321843.

It is a super-2 number, since 2×348123557640² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 348123557640.

It is not an unprimeable number, because it can be changed into a prime (348123557641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450514704 + ... + 1450514943.

It is an arithmetic number, because the mean of its divisors is an integer number (32636583540).

Almost surely, 2^348123557640 is an apocalyptic number.

348123557640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

348123557640 is an abundant number, since it is smaller than the sum of its proper divisors (696247115640).

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

348123557640 is a wasteful number, since it uses less digits than its factorization.

348123557640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901029661 (or 2901029657 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 348123557640 in words is "three hundred forty-eight billion, one hundred twenty-three million, five hundred fifty-seven thousand, six hundred forty".