1620039377986 has 8 divisors (see below), whose sum is σ = 2430090838080. Its totient is φ = 810009098628.

The previous prime is 1620039377977. The next prime is 1620039377987. The reversal of 1620039377986 is 6897739300261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1620039377987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102566 + ... + 5410753.

It is an arithmetic number, because the mean of its divisors is an integer number (303761354760).

Almost surely, 2^{1620039377986} is an apocalyptic number.

1620039377986 is a deficient number, since it is larger than the sum of its proper divisors (810051460094).

1620039377986 is a wasteful number, since it uses less digits than its factorization.

1620039377986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590368.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 1620039377986 in words is "one trillion, six hundred twenty billion, thirty-nine million, three hundred seventy-seven thousand, nine hundred eighty-six".