35673680921 has 4 divisors (see below), whose sum is σ = 35674100532. Its totient is φ = 35673261312.

The previous prime is 35673680897. The next prime is 35673681011. The reversal of 35673680921 is 12908637653.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18581779225 + 17091901696 = 136315^2 + 130736^2 .

It is a cyclic number.

It is not a de Polignac number, because 35673680921 - 2²² = 35669486617 is a prime.

It is a super-2 number, since 2×35673680921² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 35673680921.

It is not an unprimeable number, because it can be changed into a prime (35673680221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32120 + ... + 269033.

It is an arithmetic number, because the mean of its divisors is an integer number (8918525133).

Almost surely, 2^35673680921 is an apocalyptic number.

It is an amenable number.

35673680921 is a deficient number, since it is larger than the sum of its proper divisors (419611).

35673680921 is a wasteful number, since it uses less digits than its factorization.

35673680921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419610.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 35673680921 in words is "thirty-five billion, six hundred seventy-three million, six hundred eighty thousand, nine hundred twenty-one".