651620056411 has 4 divisors (see below), whose sum is σ = 651623194872. Its totient is φ = 651616917952.

The previous prime is 651620056403. The next prime is 651620056511. The reversal of 651620056411 is 114650026156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651620056411 - 2³ = 651620056403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651620056511) 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, 1233910 + ... + 1681003.

It is an arithmetic number, because the mean of its divisors is an integer number (162905798718).

Almost surely, 2^651620056411 is an apocalyptic number.

651620056411 is a deficient number, since it is larger than the sum of its proper divisors (3138461).

651620056411 is a wasteful number, since it uses less digits than its factorization.

651620056411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138460.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 651620056411 in words is "six hundred fifty-one billion, six hundred twenty million, fifty-six thousand, four hundred eleven".