1620350138380 has 12 divisors (see below), whose sum is σ = 3402735290640. Its totient is φ = 648140055344.

The previous prime is 1620350138339. The next prime is 1620350138399. The reversal of 1620350138380 is 838310530261.

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, 40508753440 + ... + 40508753479.

It is an arithmetic number, because the mean of its divisors is an integer number (283561274220).

Almost surely, 2^{1620350138380} is an apocalyptic number.

1620350138380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620350138380 is an abundant number, since it is smaller than the sum of its proper divisors (1782385152260).

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

1620350138380 is a wasteful number, since it uses less digits than its factorization.

1620350138380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81017506928 (or 81017506926 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 1620350138380 in words is "one trillion, six hundred twenty billion, three hundred fifty million, one hundred thirty-eight thousand, three hundred eighty".