3953643970553 has 2 divisors, whose sum is σ = 3953643970554. Its totient is φ = 3953643970552.

The previous prime is 3953643970537. The next prime is 3953643970621. The reversal of 3953643970553 is 3550793463593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2908481252329 + 1045162718224 = 1705427^2 + 1022332^2 .

It is a cyclic number.

It is not a de Polignac number, because 3953643970553 - 2⁴ = 3953643970537 is a prime.

It is a super-2 number, since 2×3953643970553² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3953643970453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976821985276 + 1976821985277.

It is an arithmetic number, because the mean of its divisors is an integer number (1976821985277).

Almost surely, 2^{3953643970553} is an apocalyptic number.

It is an amenable number.

3953643970553 is a deficient number, since it is larger than the sum of its proper divisors (1).

3953643970553 is an equidigital number, since it uses as much as digits as its factorization.

3953643970553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137781000, while the sum is 62.

The spelling of 3953643970553 in words is "three trillion, nine hundred fifty-three billion, six hundred forty-three million, nine hundred seventy thousand, five hundred fifty-three".