16120621126451 has 16 divisors (see below), whose sum is σ = 16977188571840. Its totient is φ = 15285805301760.

The previous prime is 16120621126403. The next prime is 16120621126471. The reversal of 16120621126451 is 15462112602161.

It is a cyclic number.

It is not a de Polignac number, because 16120621126451 - 2¹⁴ = 16120621110067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16120621126471) 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, 14703026 + ... + 15761351.

It is an arithmetic number, because the mean of its divisors is an integer number (1061074285740).

Almost surely, 2^{16120621126451} is an apocalyptic number.

16120621126451 is a deficient number, since it is larger than the sum of its proper divisors (856567445389).

16120621126451 is a wasteful number, since it uses less digits than its factorization.

16120621126451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464734.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 16120621126451 in words is "sixteen trillion, one hundred twenty billion, six hundred twenty-one million, one hundred twenty-six thousand, four hundred fifty-one".