16155400855477 has 32 divisors (see below), whose sum is σ = 18893691210240. Its totient is φ = 13677244277760.

The previous prime is 16155400855463. The next prime is 16155400855493. The reversal of 16155400855477 is 77455800455161.

It is not a de Polignac number, because 16155400855477 - 2²³ = 16155392466869 is a prime.

It is a super-2 number, since 2×16155400855477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16155400855457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2123599 + ... + 6067987.

It is an arithmetic number, because the mean of its divisors is an integer number (590427850320).

Almost surely, 2^{16155400855477} is an apocalyptic number.

16155400855477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16155400855477 is a deficient number, since it is larger than the sum of its proper divisors (2738290354763).

16155400855477 is a wasteful number, since it uses less digits than its factorization.

16155400855477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944893.

The product of its (nonzero) digits is 23520000, while the sum is 58.

The spelling of 16155400855477 in words is "sixteen trillion, one hundred fifty-five billion, four hundred million, eight hundred fifty-five thousand, four hundred seventy-seven".