16426220520 has 32 divisors (see below), whose sum is σ = 49278661920. Its totient is φ = 4380325440.

The previous prime is 16426220519. The next prime is 16426220533. The reversal of 16426220520 is 2502262461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68442466 + ... + 68442705.

It is an arithmetic number, because the mean of its divisors is an integer number (1539958185).

Almost surely, 2^16426220520 is an apocalyptic number.

16426220520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16426220520 is an abundant number, since it is smaller than the sum of its proper divisors (32852441400).

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

16426220520 is a wasteful number, since it uses less digits than its factorization.

16426220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136885185 (or 136885181 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 16426220520 its reverse (2502262461), we get a palindrome (18928482981).

The spelling of 16426220520 in words is "sixteen billion, four hundred twenty-six million, two hundred twenty thousand, five hundred twenty".