16220520001 has 16 divisors (see below), whose sum is σ = 19562623360. Its totient is φ = 13138329600.

The previous prime is 16220519989. The next prime is 16220520037. The reversal of 16220520001 is 10002502261.

It is a cyclic number.

It is not a de Polignac number, because 16220520001 - 2⁵ = 16220519969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (16220520101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100800 + ... + 206401.

It is an arithmetic number, because the mean of its divisors is an integer number (1222663960).

Almost surely, 2^16220520001 is an apocalyptic number.

It is an amenable number.

16220520001 is a deficient number, since it is larger than the sum of its proper divisors (3342103359).

16220520001 is a wasteful number, since it uses less digits than its factorization.

16220520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307624.

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 16220520001 in words is "sixteen billion, two hundred twenty million, five hundred twenty thousand, one".