15541042420806 has 32 divisors (see below), whose sum is σ = 35590563883008. Its totient is φ = 4431775183680.

The previous prime is 15541042420801. The next prime is 15541042420823. The reversal of 15541042420806 is 60802424014551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541042420801) 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, 355088310 + ... + 355132073.

It is an arithmetic number, because the mean of its divisors is an integer number (1112205121344).

Almost surely, 2^{15541042420806} is an apocalyptic number.

15541042420806 is an abundant number, since it is smaller than the sum of its proper divisors (20049521462202).

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

15541042420806 is a wasteful number, since it uses less digits than its factorization.

15541042420806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710220916.

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 15541042420806 in words is "fifteen trillion, five hundred forty-one billion, forty-two million, four hundred twenty thousand, eight hundred six".