1964749660461 has 32 divisors (see below), whose sum is σ = 3326636601600. Its totient is φ = 1122688330560.

The previous prime is 1964749660373. The next prime is 1964749660499. The reversal of 1964749660461 is 1640669474691.

1964749660461 is a `hidden beast` number, since 1 + 9 + 6 + 47 + 496 + 60 + 46 + 1 = 666.

It is not a de Polignac number, because 1964749660461 - 2⁹ = 1964749659949 is a prime.

It is a super-2 number, since 2×1964749660461² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964749660561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10755951 + ... + 10937091.

It is an arithmetic number, because the mean of its divisors is an integer number (103957393800).

Almost surely, 2^{1964749660461} is an apocalyptic number.

It is an amenable number.

1964749660461 is a deficient number, since it is larger than the sum of its proper divisors (1361886941139).

1964749660461 is a wasteful number, since it uses less digits than its factorization.

1964749660461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238546 (or 238540 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 1964749660461 in words is "one trillion, nine hundred sixty-four billion, seven hundred forty-nine million, six hundred sixty thousand, four hundred sixty-one".