1464421633640 has 64 divisors (see below), whose sum is σ = 3765764856960. Its totient is φ = 502072853760.

The previous prime is 1464421633639. The next prime is 1464421633643. The reversal of 1464421633640 is 463361244641.

It is a junction number, because it is equal to n+sod(n) for n = 1464421633591 and 1464421633600.

It is not an unprimeable number, because it can be changed into a prime (1464421633643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14783075 + ... + 14881805.

It is an arithmetic number, because the mean of its divisors is an integer number (58840075890).

Almost surely, 2^{1464421633640} is an apocalyptic number.

1464421633640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1464421633640 is an abundant number, since it is smaller than the sum of its proper divisors (2301343223320).

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

1464421633640 is a wasteful number, since it uses less digits than its factorization.

1464421633640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151722 (or 151718 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 1464421633640 in words is "one trillion, four hundred sixty-four billion, four hundred twenty-one million, six hundred thirty-three thousand, six hundred forty".