64511103723 has 16 divisors (see below), whose sum is σ = 93881275776. Its totient is φ = 39078079040.

The previous prime is 64511103689. The next prime is 64511103739. The reversal of 64511103723 is 32730111546.

64511103723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64511103723 - 2²¹ = 64509006571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (64511103793) 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, 421890 + ... + 554087.

It is an arithmetic number, because the mean of its divisors is an integer number (5867579736).

Almost surely, 2^64511103723 is an apocalyptic number.

64511103723 is a deficient number, since it is larger than the sum of its proper divisors (29370172053).

64511103723 is a wasteful number, since it uses less digits than its factorization.

64511103723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977994.

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 64511103723 in words is "sixty-four billion, five hundred eleven million, one hundred three thousand, seven hundred twenty-three".