65026621000 has 128 divisors (see below), whose sum is σ = 169856818560. Its totient is φ = 23095968000.

The previous prime is 65026620977. The next prime is 65026621019. The reversal of 65026621000 is 12662056.

It is a super-2 number, since 2×65026621000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65026621000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404262 + ... + 541738.

It is an arithmetic number, because the mean of its divisors is an integer number (1327006395).

Almost surely, 2^65026621000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65026621000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84928409280).

65026621000 is an abundant number, since it is smaller than the sum of its proper divisors (104830197560).

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

65026621000 is a wasteful number, since it uses less digits than its factorization.

65026621000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137552 (or 137538 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 65026621000 in words is "sixty-five billion, twenty-six million, six hundred twenty-one thousand".