1620405460460 has 24 divisors (see below), whose sum is σ = 3407047372176. Its totient is φ = 647362964160.

The previous prime is 1620405460367. The next prime is 1620405460481. The reversal of 1620405460460 is 640645040261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49934627 + ... + 49967066.

It is an arithmetic number, because the mean of its divisors is an integer number (141960307174).

Almost surely, 2^{1620405460460} is an apocalyptic number.

1620405460460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620405460460 is an abundant number, since it is smaller than the sum of its proper divisors (1786641911716).

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

1620405460460 is a wasteful number, since it uses less digits than its factorization.

1620405460460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99902513 (or 99902511 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 1620405460460 in words is "one trillion, six hundred twenty billion, four hundred five million, four hundred sixty thousand, four hundred sixty".