64406426450 has 48 divisors (see below), whose sum is σ = 123053624064. Its totient is φ = 25065436800.

The previous prime is 64406426419. The next prime is 64406426479. The reversal of 64406426450 is 5462460446.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 64406426398 and 64406426407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709547 + ... + 795153.

It is an arithmetic number, because the mean of its divisors is an integer number (2563617168).

Almost surely, 2^64406426450 is an apocalyptic number.

64406426450 is a deficient number, since it is larger than the sum of its proper divisors (58647197614).

64406426450 is a wasteful number, since it uses less digits than its factorization.

64406426450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86027 (or 86022 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 64406426450 its reverse (5462460446), we get a palindrome (69868886896).

The spelling of 64406426450 in words is "sixty-four billion, four hundred six million, four hundred twenty-six thousand, four hundred fifty".