101493549857 has 12 divisors (see below), whose sum is σ = 118513083840. Its totient is φ = 85143512136.

The previous prime is 101493549811. The next prime is 101493549863. The reversal of 101493549857 is 758945394101.

It is a happy number.

It is not a de Polignac number, because 101493549857 - 2¹⁰ = 101493548833 is a prime.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101493549887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3266357 + ... + 3297282.

It is an arithmetic number, because the mean of its divisors is an integer number (9876090320).

Almost surely, 2^101493549857 is an apocalyptic number.

It is an amenable number.

101493549857 is a deficient number, since it is larger than the sum of its proper divisors (17019533983).

101493549857 is an frugal number, since it uses more digits than its factorization.

101493549857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563740 (or 6563693 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 101493549857 in words is "one hundred one billion, four hundred ninety-three million, five hundred forty-nine thousand, eight hundred fifty-seven".