1053721765063 has 16 divisors (see below), whose sum is σ = 1229184007200. Its totient is φ = 892653568000.

The previous prime is 1053721765037. The next prime is 1053721765087. The reversal of 1053721765063 is 3605671273501.

It is a cyclic number.

It is not a de Polignac number, because 1053721765063 - 2⁹ = 1053721764551 is a prime.

It is a super-2 number, since 2×1053721765063² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053721765003) 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, 27876538 + ... + 27914311.

It is an arithmetic number, because the mean of its divisors is an integer number (76824000450).

Almost surely, 2^{1053721765063} is an apocalyptic number.

1053721765063 is a deficient number, since it is larger than the sum of its proper divisors (175462242137).

1053721765063 is a wasteful number, since it uses less digits than its factorization.

1053721765063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55790978.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 1053721765063 in words is "one trillion, fifty-three billion, seven hundred twenty-one million, seven hundred sixty-five thousand, sixty-three".