123556315470 has 64 divisors (see below), whose sum is σ = 347163134976. Its totient is φ = 27552625920.

The previous prime is 123556315439. The next prime is 123556315471. The reversal of 123556315470 is 74513655321.

It is a super-2 number, since 2×123556315470² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123556315471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7166554 + ... + 7183773.

It is an arithmetic number, because the mean of its divisors is an integer number (5424423984).

Almost surely, 2^123556315470 is an apocalyptic number.

123556315470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123556315470 is an abundant number, since it is smaller than the sum of its proper divisors (223606819506).

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

123556315470 is a wasteful number, since it uses less digits than its factorization.

123556315470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14350385.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 123556315470 in words is "one hundred twenty-three billion, five hundred fifty-six million, three hundred fifteen thousand, four hundred seventy".