1620267951040 has 28 divisors (see below), whose sum is σ = 3858263059176. Its totient is φ = 648107180288.

The previous prime is 1620267951013. The next prime is 1620267951061. The reversal of 1620267951040 is 401597620261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531668354 + ... + 2531668993.

Almost surely, 2^{1620267951040} is an apocalyptic number.

1620267951040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620267951040 is an abundant number, since it is smaller than the sum of its proper divisors (2237995108136).

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

1620267951040 is an equidigital number, since it uses as much as digits as its factorization.

1620267951040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063337364 (or 5063337354 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 1620267951040 in words is "one trillion, six hundred twenty billion, two hundred sixty-seven million, nine hundred fifty-one thousand, forty".