101006778492 has 48 divisors (see below), whose sum is σ = 262407281920. Its totient is φ = 33599773296.

The previous prime is 101006778479. The next prime is 101006778533. The reversal of 101006778492 is 294877600101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907618 + ... + 1012809.

Almost surely, 2^101006778492 is an apocalyptic number.

101006778492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101006778492 is an abundant number, since it is smaller than the sum of its proper divisors (161400503428).

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

101006778492 is a wasteful number, since it uses less digits than its factorization.

101006778492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920927 (or 1920919 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 101006778492 in words is "one hundred one billion, six million, seven hundred seventy-eight thousand, four hundred ninety-two".