8156647455 has 32 divisors (see below), whose sum is σ = 14241588480. Its totient is φ = 3953479680.

The previous prime is 8156647451. The next prime is 8156647519. The reversal of 8156647455 is 5547466518.

It is a happy number.

It is not a de Polignac number, because 8156647455 - 2² = 8156647451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8156647398 and 8156647407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8156647451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710239 + ... + 721631.

It is an arithmetic number, because the mean of its divisors is an integer number (445049640).

Almost surely, 2^8156647455 is an apocalyptic number.

8156647455 is a deficient number, since it is larger than the sum of its proper divisors (6084941025).

8156647455 is a wasteful number, since it uses less digits than its factorization.

8156647455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751.

The product of its digits is 4032000, while the sum is 51.

The square root of 8156647455 is about 90314.1597702154. The cubic root of 8156647455 is about 2012.9696666521.

The spelling of 8156647455 in words is "eight billion, one hundred fifty-six million, six hundred forty-seven thousand, four hundred fifty-five".