1620827163827 has 8 divisors (see below), whose sum is σ = 1706146041600. Its totient is φ = 1535509504584.

The previous prime is 1620827163811. The next prime is 1620827163841. The reversal of 1620827163827 is 7283617280261.

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

It is a cyclic number.

It is not a de Polignac number, because 1620827163827 - 2⁴ = 1620827163811 is a prime.

It is a super-3 number, since 3×1620827163827³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620827163887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3948074 + ... + 4339232.

It is an arithmetic number, because the mean of its divisors is an integer number (213268255200).

Almost surely, 2^{1620827163827} is an apocalyptic number.

1620827163827 is a deficient number, since it is larger than the sum of its proper divisors (85318877773).

1620827163827 is a wasteful number, since it uses less digits than its factorization.

1620827163827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609265.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 1620827163827 in words is "one trillion, six hundred twenty billion, eight hundred twenty-seven million, one hundred sixty-three thousand, eight hundred twenty-seven".