21036586351 has 8 divisors (see below), whose sum is σ = 23040436608. Its totient is φ = 19047975000.

The previous prime is 21036586343. The next prime is 21036586357. The reversal of 21036586351 is 15368563012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21036586351 - 2³ = 21036586343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21036586357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806835 + ... + 3812356.

It is an arithmetic number, because the mean of its divisors is an integer number (2880054576).

Almost surely, 2^21036586351 is an apocalyptic number.

21036586351 is a deficient number, since it is larger than the sum of its proper divisors (2003850257).

21036586351 is a wasteful number, since it uses less digits than its factorization.

21036586351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7619453.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 21036586351 in words is "twenty-one billion, thirty-six million, five hundred eighty-six thousand, three hundred fifty-one".