90278787311 has 16 divisors (see below), whose sum is σ = 91852554240. Its totient is φ = 88722073440.

The previous prime is 90278787301. The next prime is 90278787331. The reversal of 90278787311 is 11378787209.

It is a cyclic number.

It is not a de Polignac number, because 90278787311 - 2¹⁸ = 90278525167 is a prime.

It is a super-2 number, since 2×90278787311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90278787301) 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, 6592970 + ... + 6606648.

It is an arithmetic number, because the mean of its divisors is an integer number (5740784640).

Almost surely, 2^90278787311 is an apocalyptic number.

90278787311 is a deficient number, since it is larger than the sum of its proper divisors (1573766929).

90278787311 is a wasteful number, since it uses less digits than its factorization.

90278787311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 90278787311 in words is "ninety billion, two hundred seventy-eight million, seven hundred eighty-seven thousand, three hundred eleven".