465156857772 has 144 divisors (see below), whose sum is σ = 1207025820000. Its totient is φ = 151005938688.

The previous prime is 465156857741. The next prime is 465156857773. The reversal of 465156857772 is 277758651564.

It is a happy number.

465156857772 is a `hidden beast` number, since 4 + 6 + 5 + 1 + 56 + 8 + 577 + 7 + 2 = 666.

465156857772 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (465156857773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60413979 + ... + 60421677.

It is an arithmetic number, because the mean of its divisors is an integer number (8382123750).

Almost surely, 2^465156857772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 465156857772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603512910000).

465156857772 is an abundant number, since it is smaller than the sum of its proper divisors (741868962228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

465156857772 is a wasteful number, since it uses less digits than its factorization.

465156857772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080 (or 8075 counting only the distinct ones).

The product of its digits is 98784000, while the sum is 63.

The spelling of 465156857772 in words is "four hundred sixty-five billion, one hundred fifty-six million, eight hundred fifty-seven thousand, seven hundred seventy-two".