64155055146 has 64 divisors (see below), whose sum is σ = 160144459776. Its totient is φ = 16681694400.

The previous prime is 64155055121. The next prime is 64155055157.

64155055146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64155055146² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 64155055098 and 64155055107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 788700 + ... + 866231.

It is an arithmetic number, because the mean of its divisors is an integer number (2502257184).

Almost surely, 2^64155055146 is an apocalyptic number.

64155055146 is an abundant number, since it is smaller than the sum of its proper divisors (95989404630).

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

64155055146 is a wasteful number, since it uses less digits than its factorization.

64155055146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655027.

The product of its (nonzero) digits is 360000, while the sum is 42.

It can be divided in two parts, 641550 and 55146, that added together give a palindrome (696696).

The spelling of 64155055146 in words is "sixty-four billion, one hundred fifty-five million, fifty-five thousand, one hundred forty-six".