66097501764 has 48 divisors (see below), whose sum is σ = 176320155648. Its totient is φ = 18878555808.

The previous prime is 66097501721. The next prime is 66097501807. The reversal of 66097501764 is 46710579066.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66097501721) and next prime (66097501807).

It is a super-2 number, since 2×66097501764² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116109 + ... + 381675.

It is an arithmetic number, because the mean of its divisors is an integer number (3673336576).

Almost surely, 2^66097501764 is an apocalyptic number.

It is an amenable number.

66097501764 is an abundant number, since it is smaller than the sum of its proper divisors (110222653884).

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

66097501764 is a wasteful number, since it uses less digits than its factorization.

66097501764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268544 (or 268542 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 66097501764 in words is "sixty-six billion, ninety-seven million, five hundred one thousand, seven hundred sixty-four".