66152615802 has 128 divisors (see below), whose sum is σ = 165079918080. Its totient is φ = 17207562240.

The previous prime is 66152615783. The next prime is 66152615813. The reversal of 66152615802 is 20851625166.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22400358 + ... + 22403310.

It is an arithmetic number, because the mean of its divisors is an integer number (1289686860).

Almost surely, 2^66152615802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66152615802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82539959040).

66152615802 is an abundant number, since it is smaller than the sum of its proper divisors (98927302278).

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

66152615802 is a wasteful number, since it uses less digits than its factorization.

66152615802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 66152615802 in words is "sixty-six billion, one hundred fifty-two million, six hundred fifteen thousand, eight hundred two".