1264487649970 has 16 divisors (see below), whose sum is σ = 2276351782848. Its totient is φ = 505734168240.

The previous prime is 1264487649961. The next prime is 1264487649979. The reversal of 1264487649970 is 799467844621.

It is an interprime number because it is at equal distance from previous prime (1264487649961) and next prime (1264487649979).

It is a junction number, because it is equal to n+sod(n) for n = 1264487649896 and 1264487649905.

It is not an unprimeable number, because it can be changed into a prime (1264487649979) 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 7 ways as a sum of consecutive naturals, for example, 7524204 + ... + 7690423.

It is an arithmetic number, because the mean of its divisors is an integer number (142271986428).

Almost surely, 2^{1264487649970} is an apocalyptic number.

1264487649970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1264487649970 is a deficient number, since it is larger than the sum of its proper divisors (1011864132878).

1264487649970 is a wasteful number, since it uses less digits than its factorization.

1264487649970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15222945.

The product of its (nonzero) digits is 146313216, while the sum is 67.

The spelling of 1264487649970 in words is "one trillion, two hundred sixty-four billion, four hundred eighty-seven million, six hundred forty-nine thousand, nine hundred seventy".