64220151631450 has 24 divisors (see below), whose sum is σ = 119456599190112. Its totient is φ = 25686530081520.

The previous prime is 64220151631429. The next prime is 64220151631459. The reversal of 64220151631450 is 5413615102246.

It is not an unprimeable number, because it can be changed into a prime (64220151631459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37416534 + ... + 39095233.

It is an arithmetic number, because the mean of its divisors is an integer number (4977358299588).

Almost surely, 2^{64220151631450} is an apocalyptic number.

64220151631450 is a deficient number, since it is larger than the sum of its proper divisors (55236447558662).

64220151631450 is a wasteful number, since it uses less digits than its factorization.

64220151631450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76528566 (or 76528561 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 64220151631450 its reverse (5413615102246), we get a palindrome (69633766733696).

The spelling of 64220151631450 in words is "sixty-four trillion, two hundred twenty billion, one hundred fifty-one million, six hundred thirty-one thousand, four hundred fifty".