21403110146572 has 48 divisors (see below), whose sum is σ = 46703284330752. Its totient is φ = 8337875964480.

The previous prime is 21403110146531. The next prime is 21403110146597. The reversal of 21403110146572 is 27564101130412.

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, 1578843 + ... + 6730450.

It is an arithmetic number, because the mean of its divisors is an integer number (972985090224).

Almost surely, 2^{21403110146572} is an apocalyptic number.

21403110146572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21403110146572 is an abundant number, since it is smaller than the sum of its proper divisors (25300174184180).

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

21403110146572 is a wasteful number, since it uses less digits than its factorization.

21403110146572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8317678 (or 8317676 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 21403110146572 its reverse (27564101130412), we get a palindrome (48967211276984).

The spelling of 21403110146572 in words is "twenty-one trillion, four hundred three billion, one hundred ten million, one hundred forty-six thousand, five hundred seventy-two".