90428767719 has 16 divisors (see below), whose sum is σ = 125826566400. Its totient is φ = 57658933376.

The previous prime is 90428767717. The next prime is 90428767721. The reversal of 90428767719 is 91776782409.

It is an interprime number because it is at equal distance from previous prime (90428767717) and next prime (90428767721).

It is a cyclic number.

It is not a de Polignac number, because 90428767719 - 2¹ = 90428767717 is a prime.

It is a super-2 number, since 2×90428767719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90428767711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688927 + ... + 809615.

It is an arithmetic number, because the mean of its divisors is an integer number (7864160400).

Almost surely, 2^90428767719 is an apocalyptic number.

90428767719 is a deficient number, since it is larger than the sum of its proper divisors (35397798681).

90428767719 is a wasteful number, since it uses less digits than its factorization.

90428767719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131574.

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 90428767719 in words is "ninety billion, four hundred twenty-eight million, seven hundred sixty-seven thousand, seven hundred nineteen".