1023501385536 has 56 divisors (see below), whose sum is σ = 3094873241280. Its totient is φ = 292428966912.

The previous prime is 1023501385499. The next prime is 1023501385547. The reversal of 1023501385536 is 6355831053201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-4 number, since 4×1023501385536⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380765541 + ... + 380768228.

Almost surely, 2^{1023501385536} is an apocalyptic number.

1023501385536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1023501385536 is an abundant number, since it is smaller than the sum of its proper divisors (2071371855744).

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

1023501385536 is an equidigital number, since it uses as much as digits as its factorization.

1023501385536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761533791 (or 761533781 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 1023501385536 in words is "one trillion, twenty-three billion, five hundred one million, three hundred eighty-five thousand, five hundred thirty-six".