471561651157 has 4 divisors (see below), whose sum is σ = 471880060236. Its totient is φ = 471243242080.

The previous prime is 471561651151. The next prime is 471561651199. The reversal of 471561651157 is 751156165174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751156165174 = 2 ⋅375578082587.

It can be written as a sum of positive squares in 2 ways, for example, as 152245114596 + 319316536561 = 390186^2 + 565081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471561651157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 471561651157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471561651151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159202318 + ... + 159205279.

It is an arithmetic number, because the mean of its divisors is an integer number (117970015059).

Almost surely, 2^471561651157 is an apocalyptic number.

It is an amenable number.

471561651157 is a deficient number, since it is larger than the sum of its proper divisors (318409079).

471561651157 is a wasteful number, since it uses less digits than its factorization.

471561651157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318409078.

The product of its digits is 882000, while the sum is 49.

The spelling of 471561651157 in words is "four hundred seventy-one billion, five hundred sixty-one million, six hundred fifty-one thousand, one hundred fifty-seven".