16620051451 has 8 divisors (see below), whose sum is σ = 16685896304. Its totient is φ = 16554257280.

The previous prime is 16620051419. The next prime is 16620051457. The reversal of 16620051451 is 15415002661.

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 16620051451 - 2⁵ = 16620051419 is a prime.

It is a super-2 number, since 2×16620051451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16620051457) 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, 729391 + ... + 751831.

It is an arithmetic number, because the mean of its divisors is an integer number (2085737038).

Almost surely, 2^16620051451 is an apocalyptic number.

16620051451 is a deficient number, since it is larger than the sum of its proper divisors (65844853).

16620051451 is a wasteful number, since it uses less digits than its factorization.

16620051451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25341.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 16620051451 in words is "sixteen billion, six hundred twenty million, fifty-one thousand, four hundred fifty-one".