10217521740 has 48 divisors (see below), whose sum is σ = 28656294912. Its totient is φ = 2720174016.

The previous prime is 10217521739. The next prime is 10217521751. The reversal of 10217521740 is 4712571201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 10217521698 and 10217521707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103854 + ... + 176693.

It is an arithmetic number, because the mean of its divisors is an integer number (597006144).

Almost surely, 2^10217521740 is an apocalyptic number.

10217521740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10217521740 is an abundant number, since it is smaller than the sum of its proper divisors (18438773172).

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

10217521740 is a wasteful number, since it uses less digits than its factorization.

10217521740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281166 (or 281164 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The spelling of 10217521740 in words is "ten billion, two hundred seventeen million, five hundred twenty-one thousand, seven hundred forty".