10721757267550 has 96 divisors (see below), whose sum is σ = 23407173987840. Its totient is φ = 3577945296000.

The previous prime is 10721757267503. The next prime is 10721757267601. The reversal of 10721757267550 is 5576275712701.

It is a super-2 number, since 2×10721757267550² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10721757267491 and 10721757267500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 484714 + ... + 4656013.

It is an arithmetic number, because the mean of its divisors is an integer number (243824729040).

Almost surely, 2^{10721757267550} is an apocalyptic number.

10721757267550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10721757267550 is an abundant number, since it is smaller than the sum of its proper divisors (12685416720290).

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

10721757267550 is a wasteful number, since it uses less digits than its factorization.

10721757267550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140906 (or 5140901 counting only the distinct ones).

The product of its (nonzero) digits is 7203000, while the sum is 55.

The spelling of 10721757267550 in words is "ten trillion, seven hundred twenty-one billion, seven hundred fifty-seven million, two hundred sixty-seven thousand, five hundred fifty".