10091420777 has 8 divisors (see below), whose sum is σ = 10332915840. Its totient is φ = 9852685920.

The previous prime is 10091420761. The next prime is 10091420797. The reversal of 10091420777 is 77702419001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10091420777 - 2⁴ = 10091420761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10091420777.

It is not an unprimeable number, because it can be changed into a prime (10091420797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682652 + ... + 697277.

It is an arithmetic number, because the mean of its divisors is an integer number (1291614480).

Almost surely, 2^10091420777 is an apocalyptic number.

It is an amenable number.

10091420777 is a deficient number, since it is larger than the sum of its proper divisors (241495063).

10091420777 is a wasteful number, since it uses less digits than its factorization.

10091420777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380103.

The product of its (nonzero) digits is 24696, while the sum is 38.

Adding to 10091420777 its reverse (77702419001), we get a palindrome (87793839778).

The spelling of 10091420777 in words is "ten billion, ninety-one million, four hundred twenty thousand, seven hundred seventy-seven".