4156405551 has 12 divisors (see below), whose sum is σ = 6004521640. Its totient is φ = 2770556400.

The previous prime is 4156405523. The next prime is 4156405559. The reversal of 4156405551 is 1555046514.

4156405551 is a `hidden beast` number, since 4 + 1 + 5 + 640 + 5 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 4156405551 - 2⁹ = 4156405039 is a prime.

It is a super-2 number, since 2×4156405551² = 34551414208767227202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156405559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47976 + ... + 103026.

Almost surely, 2^4156405551 is an apocalyptic number.

4156405551 is a deficient number, since it is larger than the sum of its proper divisors (1848116089).

4156405551 is a wasteful number, since it uses less digits than its factorization.

4156405551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63446 (or 63443 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 4156405551 is about 64470.1911816616. The cubic root of 4156405551 is about 1607.8269554169.

The spelling of 4156405551 in words is "four billion, one hundred fifty-six million, four hundred five thousand, five hundred fifty-one".