90416528157578 has 24 divisors (see below), whose sum is σ = 157882522915332. Its totient is φ = 38721717754944.

The previous prime is 90416528157559. The next prime is 90416528157583. The reversal of 90416528157578 is 87575182561409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54477138624769 + 35939389532809 = 7380863^2 + 5994947^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335851475 + ... + 336120582.

Almost surely, 2^{90416528157578} is an apocalyptic number.

90416528157578 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

90416528157578 is a deficient number, since it is larger than the sum of its proper divisors (67465994757754).

90416528157578 is a wasteful number, since it uses less digits than its factorization.

90416528157578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671973446 (or 671973439 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 68.

The spelling of 90416528157578 in words is "ninety trillion, four hundred sixteen billion, five hundred twenty-eight million, one hundred fifty-seven thousand, five hundred seventy-eight".