21462155126412 has 144 divisors (see below), whose sum is σ = 67607520890112. Its totient is φ = 5145771421440.

The previous prime is 21462155126381. The next prime is 21462155126437.

21462155126412 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68564083 + ... + 68876394.

It is an arithmetic number, because the mean of its divisors is an integer number (469496672848).

Almost surely, 2^{21462155126412} is an apocalyptic number.

21462155126412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21462155126412 is an abundant number, since it is smaller than the sum of its proper divisors (46145365763700).

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

21462155126412 is a wasteful number, since it uses less digits than its factorization.

21462155126412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137440528 (or 137440513 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The spelling of 21462155126412 in words is "twenty-one trillion, four hundred sixty-two billion, one hundred fifty-five million, one hundred twenty-six thousand, four hundred twelve".