4155691551 has 16 divisors (see below), whose sum is σ = 6143737728. Its totient is φ = 2477311200.

The previous prime is 4155691541. The next prime is 4155691567. The reversal of 4155691551 is 1551965514.

It is a happy number.

It is not a de Polignac number, because 4155691551 - 2¹⁰ = 4155690527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155691541) 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, 1030201 + ... + 1034226.

It is an arithmetic number, because the mean of its divisors is an integer number (383983608).

Almost surely, 2^4155691551 is an apocalyptic number.

4155691551 is a deficient number, since it is larger than the sum of its proper divisors (1988046177).

4155691551 is a wasteful number, since it uses less digits than its factorization.

4155691551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064502.

The product of its digits is 135000, while the sum is 42.

The square root of 4155691551 is about 64464.6535009690. The cubic root of 4155691551 is about 1607.7348843414.

The spelling of 4155691551 in words is "four billion, one hundred fifty-five million, six hundred ninety-one thousand, five hundred fifty-one".