101494388851 has 4 divisors (see below), whose sum is σ = 101729875104. Its totient is φ = 101258902600.

The previous prime is 101494388813. The next prime is 101494388881. The reversal of 101494388851 is 158883494101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158883494101 = 6553 ⋅24245917.

It is a cyclic number.

It is not a de Polignac number, because 101494388851 - 2¹¹ = 101494386803 is a prime.

It is a super-2 number, since 2×101494388851² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101494388881) 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 3 ways as a sum of consecutive naturals, for example, 117742480 + ... + 117743341.

It is an arithmetic number, because the mean of its divisors is an integer number (25432468776).

Almost surely, 2^101494388851 is an apocalyptic number.

101494388851 is a deficient number, since it is larger than the sum of its proper divisors (235486253).

101494388851 is an equidigital number, since it uses as much as digits as its factorization.

101494388851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235486252.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 101494388851 in words is "one hundred one billion, four hundred ninety-four million, three hundred eighty-eight thousand, eight hundred fifty-one".