816156051 has 8 divisors (see below), whose sum is σ = 1088666880. Its totient is φ = 543874632.

The previous prime is 816156041. The next prime is 816156059. The reversal of 816156051 is 150651618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 816156051 - 2¹⁰ = 816155027 is a prime.

It is a super-2 number, since 2×816156051² = 1332221399167829202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (816156059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48871 + ... + 63408.

It is an arithmetic number, because the mean of its divisors is an integer number (136083360).

Almost surely, 2^816156051 is an apocalyptic number.

816156051 is a deficient number, since it is larger than the sum of its proper divisors (272510829).

816156051 is a wasteful number, since it uses less digits than its factorization.

816156051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114705.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 816156051 is about 28568.4450224369. The cubic root of 816156051 is about 934.5253106299.

The spelling of 816156051 in words is "eight hundred sixteen million, one hundred fifty-six thousand, fifty-one".