66946355102 has 24 divisors (see below), whose sum is σ = 113939103936. Its totient is φ = 29448540000.

The previous prime is 66946355101. The next prime is 66946355111. The reversal of 66946355102 is 20155364966.

It is a super-2 number, since 2×66946355102² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66946355101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4454399 + ... + 4469402.

It is an arithmetic number, because the mean of its divisors is an integer number (4747462664).

Almost surely, 2^66946355102 is an apocalyptic number.

66946355102 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66946355102 is a deficient number, since it is larger than the sum of its proper divisors (46992748834).

66946355102 is a wasteful number, since it uses less digits than its factorization.

66946355102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923856 (or 8923845 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 66946355102 in words is "sixty-six billion, nine hundred forty-six million, three hundred fifty-five thousand, one hundred two".