1421534566540 has 24 divisors (see below), whose sum is σ = 3256606462032. Its totient is φ = 516921660480.

The previous prime is 1421534566531. The next prime is 1421534566553. The reversal of 1421534566540 is 456654351241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3230760159 + ... + 3230760598.

It is an arithmetic number, because the mean of its divisors is an integer number (135691935918).

Almost surely, 2^{1421534566540} is an apocalyptic number.

1421534566540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421534566540 is an abundant number, since it is smaller than the sum of its proper divisors (1835071895492).

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

1421534566540 is a wasteful number, since it uses less digits than its factorization.

1421534566540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461520777 (or 6461520775 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 1421534566540 in words is "one trillion, four hundred twenty-one billion, five hundred thirty-four million, five hundred sixty-six thousand, five hundred forty".