90887769724 has 6 divisors (see below), whose sum is σ = 159053597024. Its totient is φ = 45443884860.

The previous prime is 90887769697. The next prime is 90887769727. The reversal of 90887769724 is 42796778809.

It is a super-4 number, since 4×90887769724⁴ (a number of 45 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90887769724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90887769727) 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 as a sum of consecutive naturals, namely, 11360971212 + ... + 11360971219.

Almost surely, 2^90887769724 is an apocalyptic number.

It is an amenable number.

90887769724 is a deficient number, since it is larger than the sum of its proper divisors (68165827300).

90887769724 is a wasteful number, since it uses less digits than its factorization.

90887769724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721942435 (or 22721942433 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 90887769724 in words is "ninety billion, eight hundred eighty-seven million, seven hundred sixty-nine thousand, seven hundred twenty-four".