90766898890 has 32 divisors (see below), whose sum is σ = 163864736640. Its totient is φ = 36199297344.

The previous prime is 90766898881. The next prime is 90766898891. The reversal of 90766898890 is 9889866709.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90766898891) 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, 4732941 + ... + 4752079.

It is an arithmetic number, because the mean of its divisors is an integer number (5120773020).

Almost surely, 2^90766898890 is an apocalyptic number.

90766898890 is a deficient number, since it is larger than the sum of its proper divisors (73097837750).

90766898890 is a wasteful number, since it uses less digits than its factorization.

90766898890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20526.

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 90766898890 in words is "ninety billion, seven hundred sixty-six million, eight hundred ninety-eight thousand, eight hundred ninety".