66245601515010 has 32 divisors (see below), whose sum is σ = 162686872560960. Its totient is φ = 17254668301248.

The previous prime is 66245601514927. The next prime is 66245601515017. The reversal of 66245601515010 is 1051510654266.

It is not an unprimeable number, because it can be changed into a prime (66245601515017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25676588445 + ... + 25676591024.

It is an arithmetic number, because the mean of its divisors is an integer number (5083964767530).

Almost surely, 2^{66245601515010} is an apocalyptic number.

66245601515010 is an abundant number, since it is smaller than the sum of its proper divisors (96441271045950).

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

66245601515010 is a wasteful number, since it uses less digits than its factorization.

66245601515010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51353179522.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 66245601515010 in words is "sixty-six trillion, two hundred forty-five billion, six hundred one million, five hundred fifteen thousand, ten".