123455897810 has 32 divisors (see below), whose sum is σ = 259369966080. Its totient is φ = 41427145152.

The previous prime is 123455897779. The next prime is 123455897833. The reversal of 123455897810 is 18798554321.

It is a super-2 number, since 2×123455897810² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18759005 + ... + 18765584.

It is an arithmetic number, because the mean of its divisors is an integer number (8105311440).

Almost surely, 2^123455897810 is an apocalyptic number.

123455897810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123455897810 is an abundant number, since it is smaller than the sum of its proper divisors (135914068270).

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

123455897810 is a wasteful number, since it uses less digits than its factorization.

123455897810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37524650.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 123455897810 in words is "one hundred twenty-three billion, four hundred fifty-five million, eight hundred ninety-seven thousand, eight hundred ten".